WordWeb Online

1. Light teasing repartee
   - banter, raillery, give-and-take, josh [N. Amer, informal], bants [Brit, informal], borak [Austral, informal], borax [Austral, informal]
    
2. An impudent or insolent rejoinder
   "don't give me any of your backchat";
   - sass [N. Amer, informal], sassing [N. Amer, informal], backtalk [N. Amer, informal], back talk [N. Amer, informal], lip [informal], mouth

Derived forms: backchats

Type of: comeback, counter, rejoinder, repartee, replication, retort, return, riposte

Encyclopedia: Backchat