to talk in a silly way or like a child for a long time about things that are not important or without saying anything important

She'd have prattled on about her new job for the whole afternoon if I'd let her. 如果我任她讲下去的话，她可以就她的新工作唠叨一下午。

Stop your prattling and go to sleep! 你们别闲扯了，睡觉去吧！

Synonyms: blabber chatter prate

Compare: gabble verb gibber