Top 25 Slang For Guarantee – Meaning & Usage

When it comes to ensuring something is a sure bet, having the right slang can make all the difference. Curious about the hip lingo for guaranteeing success? Look no further! We’ve gathered the most popular and trendy terms that will have you feeling confident in no time. Stay ahead of the curve and boost your cool factor with our list of slang for guarantee.

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1. Sure thing

This phrase is used to express absolute certainty or assurance. It means that something is guaranteed to happen or be true.

For example, if someone asks, “Can you help me with this task?” you can respond with, “Sure thing! I’ll be happy to assist.”
When making plans, you might say, “I’ll be there at 7 pm, sure thing.”
If someone asks if you can finish a project by the deadline, you can confidently say, “Sure thing, it will be done on time.”

2. Lock

To “lock” something means to make it certain or secure. It implies a strong guarantee or assurance.

For instance, if someone asks, “Can you guarantee that this product is high quality?” you can respond with, “Absolutely, it’s a lock.”
When discussing a deal or agreement, you might say, “Once we sign the contract, it’s a lock.”
If someone asks if they can rely on your support, you can confidently say, “You can count on me, it’s a lock.”

3. Bank on it

To “bank on it” means to rely or depend on something with confidence. It suggests a high level of certainty or guarantee.

For example, if someone asks, “Can I trust you to keep this secret?” you can respond with, “You can bank on it.”
When making plans with a friend, you might say, “I’ll be there, you can bank on it.”
If someone asks if they can expect your full support, you can confidently say, “You can bank on me, I’ll be there.”

4. Bet on it

To “bet on it” means to place confidence or trust in something. It implies a strong belief in the guarantee or assurance of a particular outcome.

For instance, if someone asks, “Will you be able to finish the project on time?” you can respond with, “You can bet on it.”
When discussing a prediction or forecast, you might say, “I’m confident in my abilities, I’ll bet on it.”
If someone asks if they can rely on your word, you can confidently say, “You can bet on me, I won’t let you down.”

5. Count on it

To “count on it” means to rely or depend on something with certainty. It suggests a level of trust and confidence in the guarantee or assurance of a particular outcome.

For example, if someone asks, “Can I expect your support?” you can respond with, “You can count on it.”
When making plans with a friend, you might say, “I’ll be there, you can count on it.”
If someone asks if they can trust your judgment, you can confidently say, “You can count on me, I won’t steer you wrong.”

6. Seal the deal

This phrase means to finalize or secure an agreement or arrangement. It implies that once the deal is sealed, it is guaranteed to happen or be successful.

For example, a salesperson might say, “If we can offer them a discount, it will seal the deal.”
In a negotiation, someone might say, “We need to seal the deal before the end of the month.”
When discussing a successful outcome, one might say, “Her presentation was so convincing, it really sealed the deal.”

7. Take it to the bank

This phrase means to believe or trust in something completely, as if it were a guarantee. It implies that the information or statement is reliable and can be counted on.

For instance, if someone says, “You can take it to the bank,” they are assuring you that what they are saying is true.
When discussing a sure thing, someone might say, “That project is a success. You can take it to the bank.”
If someone is confident in their prediction, they might say, “I know we’ll win the game. Take it to the bank.”

8. In the bag

This phrase means that something is already secured or guaranteed to happen. It suggests that success is inevitable and there is no doubt about the outcome.

For example, if someone says, “The victory is in the bag,” they are confident that they will win.
When discussing a completed task, someone might say, “Don’t worry, the project is in the bag.”
If someone is confident in their abilities, they might say, “I’ve practiced so much, the performance is in the bag.”

9. Dead cert

This term is used to describe something that is absolutely certain or guaranteed to happen. It implies that there is no doubt or uncertainty about the outcome.

For instance, if someone says, “It’s a dead cert,” they are expressing complete confidence in the result.
When discussing a sure bet, someone might say, “That team winning is a dead cert.”
If someone is certain about an upcoming event, they might say, “Getting tickets to the concert is a dead cert.”

10. Money in the bank

This phrase means that something is certain or guaranteed, just like money that is securely deposited in a bank. It suggests that there is no risk or doubt about the outcome.

For example, if someone says, “That promotion is money in the bank,” they are confident it will happen.
When discussing a reliable investment, someone might say, “Buying real estate is money in the bank.”
If someone is certain about a result, they might say, “With her skills, winning the competition is money in the bank.”

11. Ironclad

This term is used to describe something that is extremely strong, reliable, or secure. It implies that there is no room for doubt or failure.

For example, “The contract has an ironclad guarantee that protects both parties.”
In a discussion about a reliable product, someone might say, “This phone has an ironclad build quality.”
A person might use this term to express certainty, saying, “I have an ironclad plan for success.”

12. Rock solid

This phrase is used to describe something that is very stable, dependable, or trustworthy. It suggests that there is little to no chance of failure or disappointment.

For instance, “The foundation of this building is rock solid.”
In a conversation about a reliable friend, someone might say, “She’s always there for me, rock solid.”
A person might use this phrase to express confidence, saying, “I have a rock solid belief in my abilities.”

13. Bulletproof

This term is used to describe something that is completely resistant to failure, errors, or setbacks. It implies that nothing can penetrate or harm it.

For example, “This security system is bulletproof, ensuring maximum protection.”
In a discussion about a reliable car, someone might say, “This vehicle is practically bulletproof against mechanical issues.”
A person might use this term to express certainty, saying, “I have a bulletproof plan that guarantees success.”

14. Can’t miss

This phrase is used to describe something that is virtually impossible to fail or overlook. It suggests that the outcome is guaranteed or highly likely to be successful.

For instance, “This investment opportunity is a can’t miss.”
In a conversation about a surefire recipe, someone might say, “This dish is a can’t miss for dinner parties.”
A person might use this phrase to express confidence, saying, “With my skills, this shot is a can’t miss.”

15. No doubt

This phrase is used to express absolute certainty or confidence in something. It implies that there is no room for doubt or uncertainty.

For example, “He will win the tournament, no doubt.”
In a discussion about a reliable source, someone might say, “Her information is always accurate, no doubt.”
A person might use this phrase to express confidence, saying, “I will complete the project on time, no doubt.”

16. You can bet your bottom dollar

This phrase is used to express complete confidence or certainty in something.

For example, “You can bet your bottom dollar that she’ll win the competition.”
A person might say, “I can bet my bottom dollar that the sun will rise tomorrow.”
Another might use the phrase to emphasize their confidence, saying, “You can bet your bottom dollar I’ll be there on time.”

17. Put your money where your mouth is

This slang phrase means to prove or demonstrate one’s commitment or belief by taking action or providing evidence.

For instance, “If you think you can do it better, then put your money where your mouth is and show us.”
Someone might challenge another person, saying, “If you’re so confident, why don’t you put your money where your mouth is?”
Another might use the phrase to encourage action, saying, “It’s time to stop talking and start doing. Put your money where your mouth is.”

18. Promise

In slang terms, “promise” refers to a guarantee or commitment made by someone.

For example, “I promise I’ll be there on time.”
Someone might say, “Promise me you won’t tell anyone.”
Another might use the term to emphasize their commitment, saying, “I promise I’ll do everything I can to help you.”

19. Assure

In slang, “assure” means to give someone confidence or guarantee them something.

For instance, “I assure you, everything will be fine.”
Someone might say, “Assure me that you won’t give up.”
Another might use the term to provide reassurance, saying, “I assure you, I’ll take care of it.”

20. Swear by

In slang, “swear by” means to have complete faith or confidence in something.

For example, “I swear by this product. It’s the best on the market.”
A person might say, “I swear by my morning routine. It sets me up for a productive day.”
Another might use the phrase to express their trust, saying, “I swear by their advice. It’s never steered me wrong.”

21. Lock it in

When someone says “lock it in,” they are expressing a strong commitment or guarantee to follow through on something.

For example, a friend might say, “I’ll lock it in that I’ll be there for your birthday party.”
In a business context, someone might say, “Lock it in, we’ll deliver the product by the end of the week.”
When making plans, a person might say, “Let’s lock it in for Saturday night.”

22. Bet

In slang, “bet” is used to express confidence or agreement with something someone has said or proposed.

For instance, if someone says, “I’ll be there in 10 minutes,” you might respond with, “Bet.”
In a conversation about plans, someone might say, “Let’s meet at the park at 2 pm,” and the other person might reply, “Bet.”
When discussing a challenge or bet, someone might say, “I bet you can’t solve this puzzle,” and the other person might respond with, “Bet I can!”

23. Swear on it

When someone says “swear on it,” they are making a solemn promise or guarantee, often emphasizing the importance or truthfulness of their statement.

For example, if someone says, “I swear on it, I didn’t eat the last slice of pizza,” they are emphasizing their honesty.
In a serious conversation, someone might say, “I swear on my mother’s life, I’ll never do that again.”
When making a personal commitment, someone might say, “I swear on my love for you, I’ll always be there.”

24. Give you my word

When someone says “give you my word,” they are making a sincere promise or guarantee to do something or follow through on a commitment.

For instance, if someone says, “I’ll give you my word that I’ll be there,” they are assuring their presence.
In a conversation about trust, someone might say, “You can trust me, I give you my word.”
When discussing a favor, someone might say, “I’ll give you my word that I’ll help you move next weekend.”

25. Bet your bottom dollar

When someone says “bet your bottom dollar,” they are expressing absolute certainty or confidence in a particular outcome or statement.

For example, if someone says, “You can bet your bottom dollar that I’ll win the race,” they are extremely confident.
In a discussion about a future event, someone might say, “You can bet your bottom dollar that I’ll be there.”
When expressing confidence in a decision, someone might say, “I’ll bet my bottom dollar that this is the right choice.”