Top 50 Slang For Assumption – Meaning & Usage

Making assumptions is a common part of everyday life, but did you know there are specific slang terms used to describe this behavior? Whether you’re a casual conversationalist or a language enthusiast, our team has put together a list of the most popular slang for assumption that will surely pique your interest. Join us as we delve into the world of assumption and uncover the quirky and intriguing words that go along with it.

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1. Presume

To presume means to take something for granted or to assume something to be true without concrete evidence. It is often used when making an assumption based on limited information.

For example, “I presume he will be at the meeting since he is always punctual.”
In a discussion about a missing item, someone might say, “I presume I left it at the office.”
A detective might say, “Based on the evidence, I presume the suspect is guilty.”

2. Guess

To guess means to make an assumption or estimate based on limited information or intuition. It is often used when trying to determine something without certainty.

For instance, “I guess we’ll have to reschedule the meeting since the client hasn’t arrived.”
When asked about a person’s age, someone might say, “I would guess they are in their late 30s.”
A friend might ask, “Can you guess what I got you for your birthday?”

3. Suppose

To suppose means to hypothesize or assume something to be true for the sake of argument or as a starting point. It is often used when considering a hypothetical situation or making a speculative assumption.

For example, “Let’s suppose for a moment that aliens exist. How would that change our perspective?”
In a discussion about a fictional scenario, someone might say, “Suppose we were living in a world without electricity. How would we adapt?”
A philosopher might ask, “Suppose there is no objective truth. How would that impact our understanding of reality?”

4. Infer

To infer means to draw a conclusion or make an educated guess based on evidence or reasoning. It is often used when interpreting information or making assumptions based on indirect clues.

For instance, “Based on his body language, I can infer that he is feeling nervous.”
When analyzing a text, someone might say, “From the author’s tone, we can infer that they are critical of the government.”
A detective might say, “By examining the fingerprints at the crime scene, I can infer that the suspect was present.”

5. Speculate

To speculate means to make a conjecture or guess about something without having all the facts or evidence. It is often used when making assumptions based on incomplete information or to discuss possibilities.

For example, “I can only speculate about the reasons behind his sudden resignation.”
In a discussion about a future event, someone might say, “We can only speculate about the outcome until the results are announced.”
A journalist might write, “Experts speculate that the stock market will experience a downturn in the coming months.”

6. Postulate

To suggest or assume something as true or as a basis for reasoning. “Postulate” is often used in a scientific or academic context.

For example, a scientist might postulate, “Based on our observations, we postulate that this new drug will be effective in treating the disease.”
In a philosophical discussion, one might say, “Some philosophers postulate the existence of multiple universes.”
A teacher might ask their students, “What postulates can we make based on the evidence presented in the text?”

7. Surmise

To make an educated guess or assumption based on limited information or evidence. “Surmise” implies a level of speculation or inference.

For instance, a detective might surmise, “Based on the evidence at the crime scene, I surmise that the suspect entered through the back door.”
In a conversation about a missing person, someone might say, “I can only surmise that they ran away due to the note they left behind.”
A person discussing a political situation might surmise, “Given recent events, we can surmise that there will be significant changes in the government.”

8. Hypothesize

To propose a tentative explanation or theory based on limited evidence or information. “Hypothesize” is often used in scientific or research contexts.

For example, a scientist might hypothesize, “We hypothesize that increased exposure to sunlight will lead to higher levels of vitamin D.”
In a discussion about an unsolved mystery, someone might say, “I hypothesize that there was more than one person involved in the crime.”
A researcher might hypothesize, “Based on previous studies, we hypothesize that the new treatment will have a positive effect on patient outcomes.”

9. Conjecture

To make an educated guess or assumption based on incomplete or uncertain information. “Conjecture” implies a level of speculation or uncertainty.

For instance, a journalist might conjecture, “I can only conjecture about the motives behind the politician’s sudden resignation.”
In a discussion about a historical event, someone might say, “Many historians have conjectured about what truly happened that day.”
A person analyzing a complex situation might conjecture, “Given the limited information available, we can only engage in conjecture at this point.”

10. Deduce

To reach a conclusion or assumption based on reasoning or evidence. “Deduce” often involves logical thinking or drawing logical conclusions.

For example, a detective might deduce, “Based on the footprints and the broken window, I deduce that the suspect entered the house from the backyard.”
In a conversation about a person’s behavior, someone might say, “From their actions, we can deduce that they are feeling guilty about something.”
A person analyzing a data set might deduce, “By examining the patterns in the data, we can deduce that there is a correlation between the two variables.”

11. Imagine

To imagine is to form a mental image or concept of something that is not present or has not yet happened. It can also mean to suppose or assume something without certain knowledge.

For example, “Imagine if we could travel back in time.”
In a discussion about a hypothetical situation, one might say, “Let’s imagine for a moment that we had unlimited resources.”
A person might ask, “Can you imagine what it would be like to live on another planet?”

12. Presuppose

To presuppose is to assume or take for granted that something is true or will happen without evidence or proof. It is often used in academic or philosophical contexts.

For instance, “The theory presupposes that humans are inherently good.”
In a debate, one might argue, “Your argument presupposes that everyone has equal opportunities.”
A philosopher might discuss the concept of presupposition, saying, “Presupposing certain beliefs can shape our understanding of the world.”

13. Believe

To believe is to accept something as true or real based on evidence, faith, or trust. It can also mean to think or assume something without certain knowledge.

For example, “I believe in the power of positive thinking.”
In a discussion about a controversial topic, one might say, “I believe that everyone should have access to healthcare.”
A person might express their belief in a supernatural phenomenon, saying, “I believe in ghosts.”

14. Hypothecate

To hypothecate is to speculate or theorize about something without certain knowledge or evidence. It is often used in legal or financial contexts.

For instance, “Some economists hypothecate that the stock market will crash.”
In a discussion about a scientific discovery, one might say, “Scientists are hypothecating about the potential applications of this new technology.”
A financial analyst might hypothecate about the future of a particular industry, saying, “I hypothecate that renewable energy will dominate the market in the next decade.”

15. Take for granted

To take for granted is to assume or accept something as true or valid without questioning or appreciating its value. It implies a lack of awareness or gratitude.

For example, “We often take for granted the convenience of modern technology.”
In a discussion about relationships, one might say, “Don’t take your partner’s love and support for granted.”
A person might reflect on their own behavior, saying, “I realize now that I took my education for granted when I was younger.”

16. Trust

To believe or rely on something or someone without questioning or doubting.

For example, “I trust that he will keep his promise.”
In a conversation about a friend’s reliability, one might say, “I trust her to always be there for me.”
A person discussing their faith might say, “I trust in a higher power to guide me.”

17. Opine

To express an opinion or belief without any evidence or proof.

For instance, “I opine that the team will win the championship.”
In a discussion about politics, one might say, “Many people opine that the current system is flawed.”
A person expressing their thoughts on a movie might opine, “I opine that the ending was unsatisfying.”

18. Conclude

To form an opinion or judgment without considering all the facts or evidence.

For example, “I concluded that she was guilty based on the circumstantial evidence.”
In a discussion about a mystery novel, one might say, “The reader is encouraged to conclude who the killer is.”
A person warning against hasty judgments might say, “Don’t conclude that he’s guilty just because of his appearance.”

19. Gather

To infer or assume something based on available information or evidence.

For instance, “I gathered from her tone that she was upset.”
In a conversation about a party, one might say, “I gathered that it was a success based on the positive feedback.”
A person discussing a news article might say, “From the facts presented, we can gather that the situation is dire.”

20. Consider

To think about or contemplate something as a possibility or assumption.

For example, “I consider him to be a valuable member of the team.”
In a discussion about a job offer, one might say, “I’m considering their offer, but I have some reservations.”
A person expressing their thoughts on a new idea might say, “I consider this approach to be innovative and worth exploring.”

21. Assume

To assume means to make an educated guess or to take something for granted without concrete evidence. It involves forming an opinion or belief based on limited information.

For example, someone might say, “I assume you’ll be attending the meeting tomorrow.”
In a conversation about someone’s whereabouts, one person might ask, “Can we assume they’re running late?”
Another might comment, “Let’s not assume anything until we have all the facts.”

22. Suggest

To suggest means to imply or propose an idea or course of action. It involves offering a possible solution or recommendation.

For instance, someone might suggest, “Why don’t we grab dinner at that new restaurant?”
In a brainstorming session, a person might say, “I suggest we focus on improving our customer service.”
Another might propose, “I suggest we start the project next week to allow for more preparation time.”

23. Think

To think means to believe or consider something. It involves forming an opinion or judgment based on reasoning or personal belief.

For example, someone might say, “I think it’s going to rain tomorrow.”
In a discussion about a controversial topic, one person might state, “I think everyone should have access to affordable healthcare.”
Another might express their thoughts by saying, “I think we need to prioritize environmental conservation.”

24. Judge

To judge means to form an opinion or evaluation about someone or something. It involves making a critical assessment based on personal standards or beliefs.

For instance, someone might judge, “She’s a talented singer.”
In a talent show, a judge might comment, “I judge this performance to be the best of the night.”
Another might express their judgment by saying, “I judge that decision to be unfair.”

25. Interpret

To interpret means to understand or explain the meaning of something. It involves analyzing and making sense of information or a situation.

For example, someone might interpret a dream as a reflection of their subconscious thoughts.
In a literature class, a student might interpret a poem as a metaphor for the human experience.
Another might try to interpret someone’s body language to determine their emotions.

26. Supposition

A supposition is a guess or assumption made without solid evidence or proof. It is a way of forming an opinion or belief based on limited information.

For example, “I’m just making a supposition, but I think she might be the one who took my book.”
In a discussion about a crime, someone might say, “We can’t arrest him based on suppositions alone.”
A person might express their uncertainty by saying, “It’s all just supposition at this point, we need more facts to make a conclusion.”

27. Inference

An inference is a conclusion or deduction made based on evidence or reasoning. It involves using available information to make an educated guess about something that is not explicitly stated.

For instance, “Based on her tone of voice, I can infer that she is upset.”
In a debate, someone might say, “Your inference is not supported by the available data.”
A person might explain their reasoning by saying, “I made an inference about the outcome based on past experiences.”

28. Speculation

Speculation refers to the act of forming a theory or conjecture without firm evidence. It involves making guesses or assumptions about something that is uncertain or unknown.

For example, “There is a lot of speculation about who will win the upcoming election.”
In a discussion about a celebrity’s personal life, someone might say, “All this speculation about their relationship is just gossip.”
A person might express their uncertainty by saying, “I can only offer speculation about what happened, as I wasn’t there.”

29. Hypothesis

A hypothesis is a proposed explanation or theory based on limited evidence. It is a tentative assumption made to explain a set of facts or phenomena.

For instance, “My hypothesis is that the plants died due to lack of sunlight.”
In a scientific experiment, someone might say, “We need to test the hypothesis before drawing any conclusions.”
A person might propose a hypothesis by saying, “I have a hypothesis that eating breakfast improves cognitive function.”

30. Theory

A theory is a well-substantiated explanation of some aspect of the natural world. It is based on a collection of facts, evidence, and observations.

For example, “The theory of evolution explains the development of species over time.”
In a discussion about physics, someone might say, “The theory of relativity revolutionized our understanding of space and time.”
A person might explain a complex concept by saying, “Let me break it down for you using the theory of quantum mechanics.”

31. Premise

This refers to a statement or proposition that serves as the foundation for an argument or theory. It is an assumption that is used as a starting point for further reasoning or discussion.

For example, in a debate, one might say, “Let’s start with the premise that all humans have the right to healthcare.”
In a philosophical discussion, a person might argue, “The validity of an argument depends on the truth of its premises.”
A teacher might explain, “Before we analyze the text, let’s establish the premises upon which the author’s argument is built.”

32. Assumption

This is a belief or idea that is taken for granted without proof or evidence. It is an assumption made about something or someone without concrete facts.

For instance, someone might say, “I made the assumption that she was a vegetarian because she ordered a salad.”
In a detective novel, a character might say, “Our investigation was based on the assumption that the suspect had a motive.”
A psychologist might ask, “What assumptions do you have about yourself that might be influencing your behavior?”

33. Presupposition

A presupposition is an assumption that is taken for granted or implied in a statement or argument. It is a belief or idea that is treated as true without being explicitly stated.

For example, in a conversation, someone might say, “Assuming you’re free tomorrow, would you like to go to the movies?” The presupposition is that the person may or may not be free.
In a therapy session, a counselor might ask, “What are some of the underlying presuppositions that are contributing to your anxiety?”
A linguist might analyze a sentence and identify the presuppositions embedded within it.

34. Hypothetical

This refers to something that is based on a hypothesis or assumption rather than actual facts or evidence. It is an imagined or speculative scenario that is used for the purpose of discussion or analysis.

For instance, someone might say, “Let’s consider a hypothetical situation where all cars run on renewable energy.”
In a philosophy class, a professor might present a hypothetical ethical dilemma and ask the students to discuss their responses.
A scientist might use a hypothetical model to explain a complex phenomenon before conducting experiments to gather data.

35. Deduction

This is the process of reaching a conclusion based on logical reasoning and available information. It involves making assumptions and drawing conclusions from evidence or premises.

For example, in a mystery novel, a detective might use deduction to solve a crime by piecing together clues and eliminating possibilities.
In a debate, one might say, “Based on the evidence presented, we can make the deduction that the policy will have a positive impact on the economy.”
A logician might explain, “Deductive reasoning involves moving from general premises to specific conclusions.”

36. Conclusion

A conclusion refers to a final decision or judgment reached after considering all the evidence or information available. It is often used to summarize and bring closure to a discussion or argument.

For example, “Based on the evidence presented, we can draw the conclusion that the suspect is guilty.”
In a scientific study, a researcher might state, “Our conclusion is that the new treatment is effective in reducing symptoms.”
A person might say, “In conclusion, I believe that education is the key to solving many societal issues.”

37. Interpretation

Interpretation refers to the process of assigning meaning to something, such as a text, a work of art, or a situation. It involves analyzing and making sense of the information or content.

For instance, “His interpretation of the painting is that it symbolizes the struggle for freedom.”
In a discussion about a poem, someone might offer their interpretation, saying, “I interpret the poem as a reflection on the fleeting nature of life.”
A person might say, “Everyone has their own interpretation of the movie’s ending.”

38. Notion

A notion refers to a concept or idea, often one that is not fully formed or supported by evidence. It can also refer to a belief or understanding of something.

For example, “I have a notion that she might be hiding something.”
In a conversation about a new business venture, someone might suggest, “I have a notion for a unique marketing strategy.”
A person might say, “The notion that money brings happiness is misguided.”

39. Conception

Conception can refer to the act of conceiving or becoming pregnant, but it can also mean the formation or development of an idea or understanding.

For instance, “The conception of the novel took years of planning and research.”
In a discussion about a scientific theory, someone might explain, “The conception of this theory revolutionized our understanding of the universe.”
A person might say, “My conception of success has evolved over time.”

40. Belief

Belief refers to a conviction or acceptance that something is true or exists, often without concrete proof. It can also refer to a religious or spiritual faith.

For example, “Her belief in the power of positive thinking is unwavering.”
In a discussion about different religions, someone might explain their belief system, saying, “My belief is rooted in the teachings of Buddhism.”
A person might say, “It is important to respect others’ beliefs, even if they differ from our own.”

41. Understanding

This refers to making an assumption or taking something for granted without solid evidence or proof. It implies that one is basing their understanding on limited information or personal beliefs.

For example, “I’m understanding that you’ll be attending the party tonight.”
In a conversation about a coworker’s absence, someone might say, “I’m understanding that they’re on vacation this week.”
A person might ask, “Are you understanding that I want to be left alone right now?”

42. Implication

This refers to inferring or assuming something based on indirect or implied information. It suggests that there is a hidden meaning or message that needs to be understood.

For instance, “The implication of her statement was that she didn’t trust him.”
In a discussion about a political speech, someone might say, “The implication of his words is that he supports stricter immigration policies.”
A person might comment, “The implication here is that they’re planning to make significant changes to the company.”

43. Assertion

This refers to making a claim or stating something as if it were a fact, without providing evidence or proof. It implies that one is assuming their statement is true without considering other possibilities.

For example, “She made the assertion that she was the best candidate for the job.”
In a debate about climate change, someone might assert, “The scientific consensus is that human activity is causing global warming.”
A person might say, “His assertion that he can predict the future is unfounded.”

44. Allegation

This refers to making a claim or accusation without solid evidence or proof. It implies that one is assuming someone’s guilt or involvement in something based on limited information or personal beliefs.

For instance, “The allegation against him is that he stole money from the company.”
In a discussion about a celebrity scandal, someone might say, “The allegations against him are shocking and disturbing.”
A person might comment, “It’s important to remember that an allegation is not the same as a conviction.”

45. Presage

This refers to predicting or assuming something based on signs or indications. It implies that one is interpreting these signs as a prediction of a future event or outcome.

For example, “The dark clouds presage an approaching storm.”
In a conversation about a failing business, someone might say, “The decline in sales presages the company’s eventual closure.”
A person might comment, “These early warning signs presage a potential economic downturn.”

46. Conceive

This means to form or develop a thought, idea, or belief. It often implies a creative or abstract thinking process.

For example, “I conceived of a new invention that could revolutionize the industry.”
In a discussion about philosophy, someone might say, “The philosopher conceived of a new theory on the nature of reality.”
A person might question, “Have you ever conceived of a world without technology?”

47. Reason

This refers to the process of thinking logically and using rationality to come to a conclusion or make a judgment. It involves considering evidence, facts, and arguments.

For instance, “Let’s reason through this problem and find a solution.”
In a debate, one might say, “I can’t accept your argument because it lacks sound reasoning.”
A person might ask, “What is the reasoning behind your decision?”

48. Convince

This means to persuade or make someone believe or agree with a certain idea or point of view. It involves presenting arguments or evidence to change someone’s opinion.

For example, “She convinced me to try the new restaurant by describing the delicious food.”
In a discussion about politics, someone might say, “I’m trying to convince others to vote for my candidate.”
A person might assert, “I can convince you that my theory is true with solid evidence.”

49. Deem

This refers to forming an opinion or judgment about something or someone. It often implies a subjective evaluation based on personal beliefs or standards.

For instance, “The jury deemed the defendant guilty based on the evidence presented.”
In a review, one might say, “I deem this movie to be a masterpiece of storytelling.”
A person might express, “I deem it necessary to take action against climate change.”

50. Accept

This means to agree or believe that something is true or valid. It involves recognizing and embracing a certain idea or proposition.

For example, “I accept the fact that I made a mistake.”
In a discussion about diversity, someone might say, “We need to accept people from all walks of life.”
A person might admit, “I accept that I need to work harder to achieve my goals.”