agreeable rattle babble babblement babbler bavardage be indiscreet be unguarded bear witness against betray betray a confidence betrayer bibble-babble big talker blabber blabberer blabbermouth blah-blah blather blatherer blether blethers blow the whistle blurt blurt out broadcast cackle caquet caqueterie chat chatter chatterbox chatterer chitter-chatter clack clatter delator disclose dither divulge expose fink gab gabber gabble gabbler gas gasbag gibber gibble-gabble gibble-gabbler give away go on gossip great talker guff gush haver hot air hot-air artist idle chatterer idle talk inform inform against inform on informer jabber jabberer jaw jay leak let drop let fall let slip magpie mere talk moulin a paroles narc natter noise about nonsense talk palaver patter patterer peach peacher pour forth prate prater prating prattle prattler prittle-prattle ramble on rat rattle rattle on reel off reveal reveal a secret rumor run on sell out sing snitch snitch on snitcher spill spill the beans spout spout off spy squeal squealer stool stool pigeon stoolie talebearer talk talk away talk nonsense talk on talkee-talkee tattle tattle on tattler tattletale tell on tell secrets tell tales telltale testify against tittle-tattle turn informer twaddle twattle waffle whistle-blower windbag windjammer word-slinger yak yakkety-yak