betrayer canary fink informant informer nark rat squealer talebearer tattler tattletale telltale blabbermouth grass mole narc plant sneak snout source tipster turncoat weasel traitor spy accuser insider supergrass fizgig snake quisling backstabber blab nose deceiver leaker tabby tattle gossip tout crier notifier beagle intelligencer scandalmonger ratfink meddler parrot prattler chatterer busybody flibbertigibbet babbler snoop whisperer chatterbox scandalizer pimp defector deserter apostate renegade recreant collaborator serpent stooge gossiper newsmonger circulator scab blabber finger messenger quidnunc bigmouth shelf infiltrator peacher songbird dog singer conspirator renegado shill decoy crypto pigeon adviser announcer skunk slink toad seceder spokesperson connection rebel backslider supplier expert rascal