informer

Definitions of informer
  1. noun
    one who reveals confidential information in return for money
    synonyms: betrayer, blabber, rat, squealer
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    types:
    canary, fink, sneak, sneaker, snitch, snitcher, stool pigeon, stoolie, stoolpigeon
    someone acting as an informer or decoy for the police
    copper's nark, nark
    an informer or spy working for the police
    grass, supergrass
    a police informer who implicates many people
    type of:
    informant, source
    a person who supplies information
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