tattling

(verb) speak (about unimportant matters) rapidly and incessantly. Synonyms: chatter, piffle, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble.

(verb) divulge confidential information or secrets. Synonyms: spill the beans, let the cat out of the bag, talk, tattle, blab, peach, babble, sing, babble out, blab out. Example: "Be careful--his secretary talks."

(adj) prone to communicate confidential information. Synonyms: blabbermouthed, leaky, talebearing(prenominal), tattling(prenominal).