adjective, chat·ti·er, chat·ti·est.
- characterized by friendly and informal talk or writing, often about minor or personal matters: a long, chatty letter from my sister.
- given to such talk: a lovable, chatty old man.
adjective -tier or -tiest
- full of trivial conversation; talkative
- informal and friendly; gossipya chatty letter
“fond of chatting,” 1746, from chat + -y (2). Related: Chattily; chattiness.