abstract and annex appropriate bag beak bear witness against beezer betray betrayer blab blabber blabberer blabbermouth blow the whistle boost borrow canary conk cop crib defraud delator embezzle extort filch fink hook inform against inform on informer lift make off with narc nark nick nip palm peach peacher pecker pilfer pimp pinch poach purloin rat run away with rustle schnozzle scrounge sell out shoplift sing smeller snare snatch snitch on snitcher snout spy squeak squeal squealer steal stool stool pigeon stoolie swindle swipe take talebearer tattle tattler tattletale tell on telltale testify against thieve tipster turn informer walk off with whistle-blower