[chā zuǐ]
interrupt; chip in; put in a word; cut [chop; butt] in; interpose; break in; break in upon
cannot get a word in edgeways
插不上嘴
The old man would chip in while we were speaking.
我们在谈话时, 那老头儿总要插嘴。
It is not polite to interrupt when someone is talking.
在别人讲话时插嘴是不礼貌的。