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Verb: blab (blabbed,blabbing)  blab
Usage: informal
  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, rabbit [Brit, informal], vapour [Brit, Cdn], vapor [US], witter [Brit, informal], twattle [UK, dialect], yabber [Brit, informal], yatter [Brit, informal]

Derived forms: blabs, blabbed, blabbing

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