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noun
Someone acting as an informer or decoy for the police.
synonyms: canary, fink, sneak, sneaker, snitch, snitcher, stool pigeon, stoolie.
is a specific kind of: betrayer, blabber, informer, rat, squealer.
derivation: confess, fink, squeal | betray, denounce, give away, grass, rat, shit, shop, snitch, stag, tell on.
Find more on stoolpigeon elsewhere: etymology - rhymes - Wikipedia.
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