Top 38 Slang For Hidden – Meaning & Usage

From secret societies to hidden treasures, the concept of “hidden” has always captivated our imaginations. But did you know that there’s a whole world of slang words and phrases associated with this intriguing idea? Whether you’re a language enthusiast or just looking to expand your vocabulary, we’ve got you covered. Join us as we uncover the top slang for “hidden” and explore the hidden depths of the English language. Get ready to impress your friends with these hidden gems of slang!

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1. Under wraps

This phrase refers to something that is being kept hidden or secret, usually for a specific reason. It implies that the information or object is being carefully concealed or protected from public knowledge.

For example, “The details of the new product launch are still under wraps.”
A celebrity might say, “I can’t reveal any information about my upcoming project, it’s still under wraps.”
A government official might comment, “The investigation is under wraps for now, but we are making progress.”

2. Hush-hush

This term describes something that is being kept confidential or secretive. It suggests that the information or activity is not meant to be widely known or discussed.

For instance, “The company’s hush-hush project is generating a lot of curiosity.”
A friend might say, “I heard some hush-hush rumors about our boss’s upcoming promotion.”
A journalist might write, “The celebrity’s hush-hush wedding surprised everyone.”

3. Behind closed doors

This phrase suggests that something is happening privately or discreetly, away from public view. It implies that the activity or discussion is meant to be kept hidden or secret.

For example, “The negotiations took place behind closed doors to maintain confidentiality.”
A politician might say, “We need to have a serious discussion behind closed doors to address this issue.”
A coach might comment, “The team’s strategy is developed behind closed doors to maintain a competitive edge.”

4. Behind the scenes

This term refers to the unseen or hidden aspects of a particular situation or event. It implies that there is more going on than what is visible to the public.

For instance, “The behind the scenes work of the film crew is crucial for a successful movie.”
A theater director might say, “The audience only sees the final performance, but a lot of work happens behind the scenes.”
A journalist might write, “Let’s take a look behind the scenes of this popular TV show to see how it’s made.”

5. Covert

This word describes something that is done in a secretive or hidden manner. It suggests that the activity or operation is intended to be concealed from public knowledge.

For example, “The spy carried out a covert operation to gather classified information.”
A detective might say, “We need to conduct a covert investigation to catch the criminals.”
A military officer might comment, “The special forces executed a covert mission to rescue hostages.”

6. Stealthy

Refers to something or someone that moves or operates in a secretive or discreet manner. It is often used to describe actions or behaviors that are intended to go unnoticed or to avoid detection.

For example, a spy might be described as “stealthy” because they are skilled at remaining undetected.
In a video game, a player might say, “I used a stealthy approach to sneak past the guards.”
A person discussing a hidden agenda might say, “They are being very stealthy about their true intentions.”

7. Clandestine

This term refers to something that is done secretly or in a concealed manner. It implies that the activity or information is hidden from view or kept confidential.

For instance, a clandestine meeting might be arranged to discuss sensitive or confidential matters.
In a spy novel, the protagonist might engage in a clandestine operation to gather intelligence.
A person might say, “I have a clandestine plan to surprise my partner on their birthday.”

8. Underground

Describes something that is hidden or operating outside of the mainstream or official channels. It often refers to activities, movements, or cultures that exist outside of the mainstream society.

For example, underground music scenes are often associated with alternative or independent artists who are not signed to major record labels.
In a political context, an underground organization might operate secretly to resist or protest against the government.
A person might say, “I love discovering underground art exhibitions that showcase emerging artists.”

9. Off the grid

Refers to being completely disconnected from the public utilities or infrastructure, such as electricity, water, or internet. It can also be used metaphorically to describe someone who is intentionally living a life that is disconnected from mainstream society.

For instance, a person might choose to live off the grid by generating their own electricity through solar panels and collecting rainwater for their needs.
In a conversation about social media, someone might say, “I’m taking a break from Facebook and going off the grid for a while.”
A person might describe their remote cabin in the woods as “off the grid” because it is not connected to any public utilities.

10. Under the radar

This term refers to something or someone that is not attracting attention or going unnoticed. It implies that something or someone is not being detected or monitored.

For example, a spy might try to operate under the radar to avoid detection by enemy agents.
In a discussion about business strategies, someone might say, “We need to launch this product under the radar to surprise our competitors.”
A person might describe their low-key lifestyle as “flying under the radar” because they prefer to avoid attention.

11. Behind the veil

This phrase refers to something that is kept hidden or concealed from view. It implies that there is a barrier or cover that prevents others from seeing or knowing about it.

For example, “The truth behind the scandal was behind the veil for years.”
In a discussion about government secrets, one might say, “There’s a lot that’s still behind the veil in the intelligence community.”
A person might use this phrase to describe their emotions, saying, “I keep my true feelings behind the veil, so no one knows how I really feel.”

12. Under lock and key

This phrase refers to something that is kept in a locked or secure place to prevent others from accessing or finding it. It suggests that the item is hidden away and not easily accessible.

For instance, “The valuable jewelry is kept under lock and key in a safe.”
When discussing sensitive documents, one might say, “Those files are under lock and key in a secure location.”
A person might use this phrase to describe their personal belongings, saying, “I keep my important documents under lock and key to ensure their safety.”

13. In the shadows

This phrase refers to something or someone that is concealed or hidden from sight. It implies that the object or person is lurking or existing in a hidden or secretive manner.

For example, “The criminal operated in the shadows, avoiding detection.”
In a discussion about hidden agendas, one might say, “There are powerful forces working in the shadows to control the outcome.”
A person might use this phrase to describe their own actions, saying, “I prefer to stay in the shadows and observe rather than be in the spotlight.”

14. In plain sight

This phrase refers to something that is hidden in such a way that it is easily seen but goes unnoticed or unrecognized by most people. It suggests that the item or information is right in front of people, yet they fail to notice it.

For instance, “The solution to the puzzle was in plain sight the whole time.”
When discussing hidden meanings in art, one might say, “The artist cleverly hid symbols in plain sight.”
A person might use this phrase to describe a secret identity, saying, “I’m a superhero, but I live my normal life in plain sight.”

15. Concealed

This term refers to something that is intentionally kept hidden, disguised, or not easily visible. It implies that there is a deliberate effort to prevent others from discovering or seeing the concealed object or information.

For example, “The weapon was concealed in a hidden compartment.”
In a discussion about hidden intentions, one might say, “He concealed his true motives behind a friendly facade.”
A person might use this term to describe their emotions, saying, “I try to keep my pain concealed from others.”

16. Behind the curtain

This phrase refers to something that is not easily seen or known, similar to something happening behind a closed curtain. It implies that there is more going on than what is visible or obvious.

For example, “The real decision-making happens behind the curtain.”
In a political context, someone might say, “The politicians are pulling the strings behind the curtain.”
Discussing a secretive organization, a person might mention, “They operate behind the curtain of secrecy.”

17. Privy to

To be “privy to” something means to have inside knowledge or information about something that is not widely known or shared. It implies being part of a select group who is aware of a secret.

For instance, “Only a few people are privy to the company’s future plans.”
In a gossip context, someone might say, “I’m privy to some juicy information about that celebrity.”
Discussing classified information, a person might mention, “Those with security clearance are privy to sensitive details.”

18. On the down low

This phrase is used to describe something that is being kept hidden or secret, often to avoid attention or judgment. It implies doing something in a low-key or inconspicuous manner.

For example, “They’re keeping their relationship on the down low.”
In a conversation about a surprise party, someone might say, “Let’s plan everything on the down low so it stays a surprise.”
Discussing a hidden talent, a person might mention, “I can play the piano, but I keep it on the down low.”

19. Incognito

To be “incognito” means to be in a state of disguise or to conceal one’s true identity. It implies behaving or operating under a different name or appearance.

For instance, “He went incognito to the event to avoid being recognized.”
In a conversation about online privacy, someone might say, “I always browse incognito mode to protect my identity.”
Discussing a celebrity sighting, a person might mention, “I saw them walking around incognito, wearing sunglasses and a hat.”

20. Behind a mask

This phrase refers to something that is hidden or disguised, similar to someone wearing a mask to conceal their true identity. It implies that there is more to a person or situation than what is initially apparent.

For example, “He hides his true emotions behind a mask.”
In a discussion about deception, someone might say, “People often present themselves differently behind a mask.”
Discussing a secretive organization, a person might mention, “They operate behind a mask of anonymity.”

21. Undercover

Undercover refers to someone who is working or acting secretly, usually to gather information or to carry out a specific mission. It can also refer to a law enforcement officer who is working undercover to investigate criminal activity.

For example, “The detective went undercover to infiltrate the drug cartel.”
In a spy movie, a character might say, “I’m going undercover to gather intel on the enemy.”
A person discussing espionage might mention, “Undercover agents play a crucial role in gathering intelligence.”

22. Subterranean

Subterranean refers to something that is located or occurring beneath the surface of the Earth. It can also be used metaphorically to describe something hidden or concealed from view.

For instance, “There is a subterranean tunnel system beneath the city.”
In a discussion about hidden societies, one might say, “The subterranean world of hackers and cybercriminals is vast and complex.”
A person describing a hidden treasure might mention, “Legends speak of a subterranean chamber filled with untold riches.”

23. Camouflaged

Camouflaged refers to something that is intentionally designed to blend in with its surroundings in order to remain hidden or concealed. It can also be used metaphorically to describe someone or something that is difficult to detect or recognize.

For example, “The soldier wore a camouflaged uniform to blend in with the forest.”
In a discussion about animal adaptations, one might say, “The chameleon is known for its ability to camouflage itself.”
A person discussing deceptive tactics might mention, “The spy used a camouflaged device to secretly record the conversation.”

24. Shrouded

Shrouded refers to something that is covered or hidden from view, often in a mysterious or secretive manner. It can also be used metaphorically to describe something that is concealed or obscured.

For instance, “The ancient artifact was shrouded in mystery.”
In a discussion about a controversial topic, one might say, “The truth is often shrouded in a web of lies.”
A person describing a foggy landscape might mention, “The hills were shrouded in mist, creating an eerie atmosphere.”

25. Veiled

Veiled refers to something that is covered or concealed, often with a thin fabric or material. It can also be used metaphorically to describe something that is hidden or obscured.

For example, “The bride wore a veiled hat to the wedding.”
In a discussion about hidden motives, one might say, “His true intentions were veiled behind a friendly facade.”
A person discussing cultural traditions might mention, “In some cultures, women wear veiled garments as a sign of modesty.”

26. Esoteric

This term refers to something that is intended for or understood by only a small number of people with special knowledge or interest. It describes something that is difficult to understand or access for the general public.

For example, a person might say, “The esoteric teachings of this ancient philosophy are only known to a select few.”
In a discussion about rare books, someone might mention, “This esoteric manuscript is highly sought after by collectors.”
A person describing a complex scientific theory might say, “The esoteric concepts in this research paper are challenging even for experts in the field.”

27. Arcane

This term is used to describe something that is mysterious, hidden, or understood by only a few. It often refers to knowledge or practices that are known only by a select group of people.

For instance, a person might say, “The arcane rituals of this ancient civilization have fascinated historians for centuries.”
In a discussion about magic tricks, someone might mention, “The magician performed an arcane trick that left the audience in awe.”
A person describing a complex computer program might say, “The arcane code of this software is known only to a handful of programmers.”

28. Cloaked

This term describes something that is hidden or concealed, often metaphorically. It implies that something is intentionally kept secret or disguised.

For example, a person might say, “The company’s true intentions were cloaked behind a series of misleading statements.”
In a discussion about espionage, someone might mention, “The spy operated under a cloaked identity to avoid detection.”
A person describing an elusive creature might say, “The legendary monster remains cloaked in mystery, with sightings reported but never confirmed.”

29. Masked

This term refers to something that is hidden or concealed behind a mask or disguise. It can also be used metaphorically to describe something that is hidden or obscured.

For instance, a person might say, “The masked vigilante fought crime under the cover of darkness.”
In a discussion about online anonymity, someone might mention, “Internet trolls often hide behind masked identities.”
A person describing a hidden agenda might say, “The true intentions of the politician were masked by their charismatic speeches.”

30. Unseen

This term describes something that is not seen or noticed, often because it is hidden or unnoticed.

For example, a person might say, “The dangers of pollution are often unseen, but they have a significant impact on our health.”
In a discussion about supernatural phenomena, someone might mention, “Ghosts are believed to be unseen spirits that can interact with the physical world.”
A person describing a hidden talent might say, “Her incredible singing abilities remained unseen until she auditioned for a talent show.”

31. Unrevealed

This term refers to something that has not been revealed or made known to others.

For example, “The details of the new project are still unrevealed.”
A person might say, “I have some unrevealed information that could change everything.”
In a suspenseful movie, a character might say, “The identity of the killer is still unrevealed.”

32. Behind the mask

This phrase is used to describe something or someone that is concealed or hidden behind a mask or false identity.

For instance, “He always keeps his true intentions behind the mask.”
In a discussion about online anonymity, someone might say, “People can be anyone behind the mask of the internet.”
A person discussing a secretive organization might mention, “The true leaders are hidden behind the mask of lower-level members.”

33. Stealth mode

This term refers to operating or moving in a secretive or hidden manner, often to avoid detection or attention.

For example, “He went into stealth mode to complete the mission undetected.”
In a video game, a player might say, “I’m going into stealth mode to sneak past the guards.”
A person discussing a covert operation might mention, “The team operated in stealth mode to gather intelligence.”

34. Off the radar

This phrase describes something or someone that is not actively being monitored or detected, often intentionally.

For instance, “He went off the radar to escape from the authorities.”
In a discussion about privacy, someone might say, “I prefer to stay off the radar and keep my personal information private.”
A person discussing a missing person might mention, “They disappeared completely, off the radar of friends and family.”

35. Under the table

This phrase is used to describe something that is done secretly or in a concealed manner, often involving illegal or unethical activities.

For example, “They made a deal under the table to avoid taxes.”
In a discussion about corruption, someone might say, “Many bribes are done under the table to avoid detection.”
A person discussing a hidden source of income might mention, “He’s earning money under the table to avoid paying taxes.”

36. Under the carpet

This phrase is used to describe something that is hidden or kept secret, often with the intention of avoiding attention or consequences.

For example, in a political scandal, someone might say, “The truth about their corruption was swept under the carpet.”
In a discussion about family secrets, a person might reveal, “There are many skeletons under the carpet in our family.”
Someone might use this phrase to describe a hidden agenda, saying, “Their true intentions are hidden under the carpet.”

37. Below the surface

This phrase refers to something that is not readily visible or obvious, but requires deeper investigation or understanding to uncover.

For instance, in a psychological thriller, a character might say, “There’s something sinister below the surface of this town.”
In a conversation about a complicated issue, someone might comment, “There’s a lot going on below the surface that we need to consider.”
A person discussing hidden emotions might say, “He may seem fine on the outside, but there’s a lot of pain below the surface.”

38. In the dark

This phrase describes a state of being unaware or uninformed about something, often intentionally kept hidden or withheld from someone.

For example, in a business negotiation, someone might say, “They’re keeping us in the dark about their true intentions.”
In a discussion about a surprise party, a person might mention, “We had to keep her in the dark to make sure it was a surprise.”
Someone might use this phrase to describe feeling left out of important information, saying, “I hate being in the dark about what’s going on.”