babble

(noun) gibberish resembling the sounds of a baby. Synonyms: babbling, lallation.

(verb) utter meaningless sounds, like a baby, or utter in an incoherent way. Examples: "The old man is only babbling--don't pay attention."

(verb) to talk foolishly. Synonyms: blather, smatter, blether, blither. Examples: "The two women babbled and crooned at the baby."

(verb) flow in an irregular current with a bubbling noise. Synonyms: ripple, guggle, burble, bubble, gurgle. Examples: "Babbling brooks."

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