1. (verb)babble utter meaningless sounds, like a baby, or utter in an incoherent way
"The old man is only babbling--don't pay attention"
2. (verb)babble, blather, smatter, blether, blither to talk foolishly
"The two women babbled and crooned at the baby"
3. (verb)ripple, babble, guggle, burble, bubble, gurgle flow in an irregular current with a bubbling noise
"babbling brooks"
4. (verb)spill the beans, let the cat out of the bag, talk, tattle, blab, peach, babble, sing, babble out, blab out divulge confidential information or secrets
"Be careful--his secretary talks"