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Definition unless in British English

unless conjunction

conjunction
/ənˈles/
1

used for saying that if something does not happen, something else will happen or be true as a result

Example

I can't help you unless you tell me what's wrong.

Example

The car should be in the garage unless someone's moved it.

Example

Unless you come now, I'm going to leave without you.

Example

Owen wouldn't eat anything unless he'd cooked it himself.

Example

'Are you going to stay overnight?' 'Not unless it's absolutely necessary.'

Synonyms and related words
Definition unless in British English