to reveal indiscreetly and thoughtlessly

They blabbed my confidences to everyone.

to talk or chatter indiscreetly or thoughtlessly

Don't confide in him, because he blabs. She blabbed so much I couldn't hear the concert.

idle, indiscreet chattering.

a person who blabs; blabbermouth.

verb

be quiet , shut up

verb

babble , betray , blather , blurt out , chatter , disclose , divulge , gab , gabble , give away , go on , jabber , let out , let slip , mouth , peach , prattle , reveal , run off at the mouth , run on , shoot the breeze * , spill * , spill the beans * , squeal * , talk through one’s hat , tattle , tell , tell on , yak * , yakkety-yak , expose , uncover , unveil , noise , rumor , talk , tittle-tattle , whisper , blabber , chat , gossip , rat , sing , snitch , spill the beans , squeal , yak

noun

gossiper , gossipmonger , newsmonger , rumormonger , scandalmonger , tabby , talebearer , taleteller , tattle , tattler , tattletale , telltale , whisperer , babble , blabber , chat , chitchat , jabber , palaver , prate , prattle , small talk