blabs
blabs
verb
Reveals secrets or private information carelessly or indiscreetly.
"She blabs all their plans."
Thesaurus
Synonyms: tattle, gabble, prate, gibber, maunder, clack, tittle-tattle, palaver, blabber, twaddle, prattle, piffle
Antonyms: keep one's mouth shut, keep quiet, shut one's mouth