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Rats! A Mild Exclamation and a Sign of Suspicion

Recognize a polite expression of frustration, a phrase for suspecting something is wrong, and an insulting label to avoid using casually.

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Words and Their Stories · 7:16

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Source: VOA Learning English · Words and Their Stories

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This episode uses the rat’s poor reputation in American English to explain several expressions. This guide focuses on a mild exclamation for disappointment, a phrase that signals suspicion, and one dated insult learners may encounter but should not use casually. Strong-sounding accusations describe a speaker’s view, not proof that someone has done something wrong.

Cultural note: “Smell a rat” expresses suspicion; it does not establish wrongdoing. “Rat fink” is an insulting, old-fashioned label for someone viewed as a betrayer or informer. In a real conflict or safety concern, describe the specific action and evidence instead of relying on a loaded label.

Keep exploringThe same animal can inspire a mild “Oh no!” and a much stronger accusation. Listen for how the surrounding situation changes the tone.

Phrase guide · 3 expressions

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Original explanations and examples, created for learners. Save a card for later or hear the phrase spoken by your browser.

A small setback

A mild American English exclamation for frustration or disappointment.

Rats!

Meaning

A mild exclamation used when something disappointing or frustrating happens.

Tone & use

Informal and generally polite in American English. It is much milder than profanity, but can sound old-fashioned or playful.

Example

“Rats! I left the folder on the kitchen table, so I have to go back for it.”

NegativeInformal / mild

Suspecting a problem

An informal phrase for noticing something that seems wrong.

Recognition caution

smell a rat

Meaning

Suspect that something is wrong, dishonest, or not as it appears.

Tone & use

Informal and often accusatory. It communicates suspicion, not evidence; use neutral wording when fairness or accuracy matters.

Example

“The delivery notice listed an unfamiliar fee, so Ren smelled a rat and called the company to check the account.”

NegativeInformal / idiomatic

This phrase can imply that someone is dishonest. Treat it as a report of suspicion, not proof.

Recognition caution

Understand an insulting label without treating it as a neutral description.

Recognition caution

rat fink

Meaning

An insulting, dated label for someone viewed as a betrayer or informer.

Tone & use

Very informal, old-fashioned, and derogatory. Learn it for recognition; use neutral descriptions such as “reported the incident” when accuracy matters.

Example

“In the old comedy, one character calls the informer a “rat fink,” a phrase that sounds dated and insulting today.”

NegativeVery informal / dated insult

Recognition only. This is an insult, not a respectful or neutral way to describe someone who reports misconduct.

Knowledge check

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Choose the expression that best fits each situation.

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1 of 3

You realize you left your lunch at home. Which mild exclamation could show disappointment?