unless

word

/ənˈɫɛs/
uhn-LES
/ʌnlˈɛs/
uhn-LES

Definition

Used to say that something will only happen if another thing does not happen; expresses an exception or a condition.

Usage & Nuances

'Unless' introduces a negative condition. It is commonly used to mean 'if...not.' Never use 'don't' or 'not' directly after 'unless' (e.g., not 'unless you don't come', but 'unless you come'). Often used for rules, warnings, or exceptions.

Example Sentences

I will not call you unless it is important.

basic

We’ll be late unless we leave right now.

natural

You cannot go out unless you finish your homework.

basic

The shop is closed on Sundays unless there is a special event.

basic

Don’t touch that button unless you know what it does.

natural

He won’t agree to the plan unless we make some changes.

natural