"snitcher" in the noun sense
1. sneak thief, pilferer, snitcher
a thief who steals without using violence
2. fink, snitch, snitcher, stoolpigeon, stool pigeon, stoolie, sneak, sneaker, canary
someone acting as an informer or decoy for the police
Source: WordNet® (An amazing lexical database of English)
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