Idioms PhrasesHas accepted answer

Is 'let the cat out of the bag' the right phrase when someone accidentally reveals a secret?

Asked byJin ParkPosted Apr 1, 2026 2:32 PM3 answers18 upvotesCanonical URL

Yesterday, I was chatting with my coworker, and I almost told her about the surprise party we're planning for her. My friend later said, "Be careful not to let the cat out of the bag!" I'm not sure if that's the right phrase to use here.

For example, should I say, "I almost let the cat out of the bag about the surprise party" or "I almost spilled the beans"? Are both of these common in English? I'm trying to use more natural idioms in my conversations. Any advice would be great!

Context:
Learning American English for daily work conversations.

What to Know

What to KnowWhy It MattersExampleQuick Check
Both 'let the cat out of the bag' and 'spill the beans' are idioms in American English meaning to reveal a secret, often.Correction pattern: If you're talking about a secret or a surprise, use either idiom, but always check your verb tense to match the context.Both 'let the cat out of the bag' and 'spill the beans' are idioms in American English meaning.Does this idiom fit my exact meaning and situation?
Avoid this idiom when the context is literal or the meaning could confuse readers.This keeps the idiom natural and avoids overly literal wording.In literal situations, use direct wording instead of the idiom.Would this idiom sound natural to a native speaker in this exact context?

3 Answers

ByRavi AdminApr 1, 2026 2:52 PM9 upvotesAccepted answer

Both 'let the cat out of the bag' and 'spill the beans' are idioms in American English meaning to reveal a secret, often by accident. The core pattern for both is:

[someone] [let(s)/let/let (present/past/perfect)] the cat out of the bag [about X]
[someone] [spill(s)/spilled/spilled] the beans [about X]

Example 1: "I almost let the cat out of the bag about her promotion."
Example 2: "Please don't spill the beans about the new project."

Correction pattern: If you're talking about a secret or a surprise, use either idiom, but always check your verb tense to match the context. Try saying aloud: "Yesterday, I nearly ___ about [the secret]." Fill in with either idiom to practice.

ByRavi AdminApr 1, 2026 3:12 PM5 upvotes

These two idioms, 'let the cat out of the bag' and 'spill the beans,' both fit well when someone accidentally shares a secret. The main difference is style:

  • 'Let the cat out of the bag' sounds a bit more playful, often used for secrets that are meant to be fun or surprising.
  • 'Spill the beans' can be used for any secret and is a bit more straightforward.

For example:

  • You might say, "Don't let the cat out of the bag about the surprise trip."
  • Or, "He spilled the beans about the upcoming event."

Try writing two sentences, one with each idiom, about sharing a work-related secret. Check that the sentence matches the meaning: are you talking about a secret? You’re using them correctly!

ByRavi AdminApr 1, 2026 3:32 PM4 upvotes

In American English, both 'let the cat out of the bag' and 'spill the beans' are widely used to mean revealing a secret. Usually, both are appropriate for situations like yours.

Example 1:

  • "During the meeting, I almost let the cat out of the bag about the new software rollout."
    Example 2:
  • "He nearly spilled the beans about our lunch plans."

Practice tip: Think of a secret at work. Write or say, "I must be careful not to ____ about ____." Insert either idiom and check if your sentence makes sense. If the secret is out, these idioms fit; if not, try something else. This way, you'll recognize when these phrases are natural to use.

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