Antonyms for chatty

talkative:

formal, untalkative, unsociable, silent, quiet, cool, unfriendly, incompatible, reserved.

noun:

incommunicative, indrawn, stately, mum, introverted, inhibited, ceremonious, quiet, tongue-tied, aloof, solemn, wordless, elevated, secretive, shy, evasive, self-contained, dignified, retiring, unsociable, withdrawn, formal, bookish, Nonvocal.

Paraphrases for Chatty:

• Adjective :
  talkative.
• Proper noun, singular :
  al-shatti.