babblemouths

Noun

babblemouth (plural babblemouths)

1. (derogatory, informal) One who babbles.
   • It’s a slow-dazzle performance that leaves you wishing the film would pair him up with Adams (a brief dalliance between them is inexplicably dropped) instead of sending his dancer wife, a neurotic babblemouth, back home to him.1985 September 3, Scott Rosenberg, “Yuppie love: Down the upscale with Key Exchange”, in The Boston Phoenix, Boston, Mass., page 4, column 3

   Synonyms:

   airbag, babbler, bag of wind, blab, blabberer, blatherer, blabbermouth, blatherskite, bloviator, chatterbag

2. (informal, rare) One who reveals or gives away information.
   • Mr. Diefenbaker: Why, then, has the minister been such a babblemouth outside the House of Commons? Has he been instructed by the Prime Minister to keep his mouth shut from now on and endeavour to delude parliament into reaching the conclusion that what he has been babbling about he must not explain...1978, Official Report of the Debates of the House of Commons, volume 4, Canada, Parliament, House of Commons, page 3603