Definition of “reason” - Learner’s Dictionary


noun us uk /ˈriːzən/
Extra Examples
The official reason for the delay is bad weather.Her principal reason for moving is to be nearer her mother.What was the real reason she didn't come?I started learning Spanish for various reasons.He was at great pains to explain the reasons for his decision.
WHY [ C ]

A2 the facts about why something happens or why someone does something:

I knew Sam was going - that was the reason I went there.
Is there any particular reason why he doesn't want to come?
He left without giving a reason.
That was the reason for telling her.
RIGHT [ C, U ]

B2 something that makes it right for you to do something:

[ + to do sth ] There is every reason to believe the project will be finished on time.
I think we have reason to be concerned.

the ability to think and make good decisions:

By this time he'd lost his powers of reason.
within reason

If something is within reason, it is acceptable and possible:

You can have as much as you like, within reason.

(Definition of “reason noun” from the Cambridge Learner's Dictionary © Cambridge University Press)