“Let the cat out of the bag” means to reveal a secret or disclose information that was meant to stay private.
The phrase can describe an accidental slip or a deliberate announcement, and the examples below show how context makes the difference clear.
What Does “Let the Cat Out of the Bag” Mean?
To let the cat out of the bag is to reveal something that others did not know and that someone intended to keep secret.
The disclosed information might be a surprise, a private plan, or a fact that has not yet been announced publicly.
The expression is informal and commonly used in everyday conversation and writing.
It often suggests that the revelation was unintended, especially when someone speaks before the right time.
However, it can also describe a deliberate disclosure when the context makes that clear.
- Accidental disclosure: “I let the cat out of the bag about their engagement when I asked if they had chosen a wedding date.”
- Intentional disclosure: “The company let the cat out of the bag by announcing the new product ahead of the scheduled launch.”
Examples of “Let the Cat Out of the Bag” in a Sentence
These examples show how the idiom works in different situations:
- “Please don’t let the cat out of the bag about the birthday party.”
- “Maya let the cat out of the bag when she mentioned the promotion during lunch.”
- “The trailer let the cat out of the bag about the film’s surprise guest.”
- “I was hoping to tell the family together, but my brother let the cat out of the bag.”
- “The early email let the cat out of the bag before the team had finished its announcement.”
- “He didn’t mean to let the cat out of the bag; he thought everyone already knew.”
The idiom is often followed by about and the subject of the secret: “She let the cat out of the bag about the new job.” It can also stand on its own when the secret is clear from the conversation: “Keep it quiet—we don’t want to let the cat out of the bag.”
Is It Always an Accident?
No.
The phrase often carries the implication of an accidental slip, but it does not require one.
A person might deliberately reveal information and still be described as letting the cat out of the bag.
The surrounding details signal whether the disclosure was planned.
For example, “He let the cat out of the bag during the meeting” leaves the intention uncertain.
Adding “by mistake” makes the accident explicit; saying “to pressure the board” indicates a purposeful disclosure.
Use the phrase when the information was previously hidden or meant to be kept quiet.
It is less suitable for an ordinary statement of a known fact, even if that statement surprises someone.
Similar Expressions and How They Differ
Several familiar expressions describe revealing information, but they do not all emphasize the same thing.
- Spill the beans: To disclose secret information, often accidentally.
It is very close in meaning to let the cat out of the bag and is also informal. - Give the game away: To reveal a plan, intention, or concealed fact, sometimes by making a mistake.
This expression can suggest that the revelation spoils an attempt to deceive or keep an advantage. - Let someone in on a secret: To intentionally share private information with a person.
Unlike the other phrases, it is usually framed as a deliberate, cooperative act. - Reveal the secret: A direct, neutral alternative that does not carry the idiom’s informal tone or suggest an accidental slip.
These expressions overlap, but they are not interchangeable in every sentence.
For instance, “She let me in on the secret” normally means she chose to tell me, while “She let the cat out of the bag” may imply that she disclosed it too soon.
Grammar and Common Usage
The phrase changes tense by changing the verb let.
Its past tense has the same form as the present: “I let the cat out of the bag yesterday.” The present perfect is “I’ve let the cat out of the bag,” and the continuous form is “I’m letting the cat out of the bag.”
In a warning or request, use the base form: “Don’t let the cat out of the bag.” The expression can take an object when someone reveals a secret to a particular person: “I accidentally let the cat out of the bag to Nina.” More often, the listener or audience is understood from context.
Because the phrase is an idiom, its meaning is figurative.
In an ordinary use, it is not about physically releasing a cat or removing an animal from a bag.
Common Mistakes to Avoid
- Changing the wording: The established expression is let the cat out of the bag.
Replacing a word can make the idiom sound incorrect or turn it into a joke. - Using it for any surprising statement: The phrase concerns the disclosure of information that was secret or intentionally withheld.
A surprising opinion is not necessarily a secret. - Assuming it always means someone acted carelessly: Accidental disclosure is common, but the idiom can also describe a planned revelation.
- Making the tone too formal: In a legal statement, policy, or formal report, disclose confidential information or reveal the details may be clearer.
Frequently Asked Questions
Does “let the cat out of the bag” mean to reveal a secret?
Yes.
It means to disclose information that was meant to remain private or unknown.
The phrase often describes a secret being revealed too early.
Is “let the cat out of the bag” informal?
Yes.
It is a familiar, conversational idiom.
It works in many everyday contexts, but a direct phrase such as reveal confidential information may fit formal writing better.
What is the difference between “let the cat out of the bag” and “spill the beans”?
Both mean to reveal a secret and are often used in similar situations.
Let the cat out of the bag can especially suggest that information came out before the intended time; spill the beans often suggests an accidental disclosure.
Context determines the exact shade of meaning.