Skip to main content

It's/That's not on

Phrase of the day

Discover a new phrase each day to use in your English! These are special phrases and sayings that English speakers use all the time, but you don't often see these phrases in English course books or other study material. Visit daily to learn some popular English phrases on a regular basis.

3 February 2026

It's/That's not on

We use this expression to say that something is not acceptable.

Written: Yes

Spoken: Yes

Formal: No

Informal: Yes

Example 1

Shut up and get me something to eat.

Don't talk to me like that. It's not on.

Example 2

He's told me I have to stay here until I finish everything

That's not on. It's already midnight. You need to get some sleep.

Find more phrases

Previous Day
Next Day
Today's Phrase
Oct2025
30