HSK 7-9
插嘴
chāzuǐ动
to interrupt (sb talking); to butt in; to cut into a conversation
别人发言时请不要插嘴。
Bié rén fā yán shí qǐng bú yào chā zuǐ.
Please do not interrupt while someone else is speaking.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.