Synonyms for Blab out:

• n.

  •babble (noun)
  • babble.
  •babble out (noun)
  • babble out.
  •blab (noun)
  • blab.
  •blab out (noun)
  • tattle,
  • sing,
  • talk,
  • peach.

• Other synonyms:

  •Other relevant words:
  • let the cat out of the bag,
  • spill the beans.

Antonyms for Blab out:

• v.

  • Other antonyms:
    shut one's mouth, keep one's mouth shut.