snake in the grass Synonyms

snake deceitful person double-crosser stool pigeon bad egg fink weasel viper villain turncoat traitor two-timer nark snitch corrupt person rat fink fifth columnist double agent defector quisling backstabber rotter narc stoolie telltale squealer fizgig double dealer deserter creep colluder collaborator cheat canary blackguard blabber grass informer snout sneak skunk scab renegade rat pig peacher judas intelligencer betrayer