1. 辅助对话程序：backsword /单刃剑/木剑/ | backtalk /辅助对话程序/ | backthrusting /背逆断层作用/

2. 工作联络电话：backtabulation 反向制表 | backtalk 工作联络电话 | backtaper 倒锥

3. 回嘴：backstreet小街 | backtalk回嘴 | backthesails倒船

noun

1. an impudent or insolent rejoinder

e.g. don't give me any of your sass

Synonym: sasssassingback talklipmouth