a fact, situation, or explanation that causes something to happen or makes something understandable
The reason I wear a coat is that it is cold outside.
Nobody could give a clear reason for the sudden power cut.
✦ From Old French raison, from Latin ratiō “calculation, explanation”.
a fair or acceptable motive that justifies doing something
She had every reason to be proud of her award.
There is no reason to worry; the test is quite easy.
to think about something logically in order to reach a conclusion or persuade someone
He reasoned that taking the earlier train would save time.
The lawyer reasoned with the jury to show her client’s innocence.
