It isn’t on
phrase
Something is not acceptable or fair.
He stole my lunch, it isn't on.
Often appears as...
- that's not on
- it just isn't on
Usage tips
Informal
Colloquial
phrase
Something is not happening or planned.
The football match isn't on because of the rain.
Often appears as...
- the game isn't on
- the show isn't on
phrase
A device or machine is not operating or working.
The light isn't on, can you check the bulb?
Often appears as...
- the tv isn't on
- the computer isn't on
phrase
Something is not acceptable or fair.
He stole my lunch, it isn't on.
Often appears as...
- that's not on
- it just isn't on
Usage tips
Informal
Colloquial
phrase
Something is not happening or planned.
The football match isn't on because of the rain.
Often appears as...
- the game isn't on
- the show isn't on
phrase
A device or machine is not operating or working.
The light isn't on, can you check the bulb?
Often appears as...
- the tv isn't on
- the computer isn't on
Definition 1 of 3
Pro Tip 1/3Colloquial Nuance
Used in a casual conversation, often to express that something is unjust or unethical.
He took credit for your idea? That isn't on!
Pro Tip 2/3Mild Disapproval
Expresses a light form of disapproval, not severe but clear enough to voice dissatisfaction.
She skipped the queue - it just isn't on.
Pro Tip 3/3British Phrase
Especially common in British English and might not be well understood elsewhere.
Bullying in the workplace? I tell you, it isn't on.
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