WordWeb Online

1. Divulge confidential information or secrets
   "Be careful--his secretary blabs";
   - spill the beans, let the cat out of the bag, talk, tattle, peach [informal], babble, sing [informal], babble out, blab out [informal], give the game away
    
2. Speak (about unimportant matters) rapidly and incessantly
   - chatter, piffle, palaver [informal], prate, tittle-tattle, twaddle [informal], clack [informal], maunder, prattle, gibber, tattle, blabber [informal], gabble, vapour [Brit, Cdn], rabbit [Brit, informal], vapor [US], twattle [UK, dialect], witter [Brit, informal], yabber [Brit, informal], yatter [Brit, informal]

Derived forms: blabbing, blabbed, blabs

Type of: break, bring out, disclose, discover, divulge, expose, give away, lay bare, let on, let out, mouth, reveal, speak, talk, uncover, unwrap, utter, verbalise [Brit], verbalize

Encyclopedia: Blab