BLABBER
informer, betrayer, rat, squealer, blabber
(noun) one who reveals confidential information in return for money
chatter, piffle, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble
(verb) speak (about unimportant matters) rapidly and incessantly
Source: WordNet® 3.1
Etymology
Verb
blabber (third-person singular simple present blabbers, present participle blabbering, simple past and past participle blabbered)
To blather; to talk foolishly or incoherently.
To blab; to reveal a secret.
(UK, obsolete) To stick out one's tongue.
Synonyms
• (to talk foolishly): See also prattle
• (to let out a secret): See also rat out
Noun
blabber (plural blabbers)
A person who blabs; a tattler; a telltale.
Synonyms
• See also gossiper
Anagrams
• babbler, brabble
Source: Wiktionary
Blab"ber, n.
Definition: A tattler; a telltale.
Source: Webster’s Unabridged Dictionary 1913 Edition