knock it off
A2 informal intransitive
In simple words
Stop it! Stop doing that annoying thing right now!
Meanings
1 A2
idiomatic
informal
A command to stop doing something that is annoying, disruptive, or inappropriate.
"The teacher turned around and said, 'Knock it off — I can hear you talking at the back.'"
Usage notes
Almost always used as an imperative. Common in informal speech, especially when addressing children or in casual adult confrontations. 'It' is fixed — you cannot substitute another pronoun. Tone ranges from mildly irritated to angry depending on context.
Commonly used with
will you just please now already
Forms
Base
knock it off
I/you/we/they
3rd person
knocks it off
he/she/it
Past simple
knocked it off
yesterday
Past participle
knocked it off
have + pp
-ing form
knocking it off
continuous
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