Meaning of the word "rat out" in English

What does "rat out" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

rat out

US /ræt aʊt/
UK /ræt aʊt/
"rat out" picture

Phrasal Verb

1.

to inform on someone, especially to an authority

Example:
He threatened to rat out his accomplice if he didn't get a bigger share.
Don't rat out your friends, it's not cool.
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