Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “reason”

See all translations

reason

noun
 
 
/ˈriːzən/
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.Motives and reasonsReasons and explanations
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.Motives and reasons
ABILITY [U] the ability to think and make good decisions: By this time he'd lost his powers of reason.Mind and personalityScience of psychology and psychoanalysisLogic and reason
within reason If something is within reason, it is acceptable and possible: You can have as much as you like, within reason.Possible and probable
(Definition of reason noun from the Cambridge Learners Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Definitions of “reason” in other dictionaries

Word of the Day

comma

the symbol , used in writing to separate parts of a sentence showing a slight pause, or to separate the single things in a list

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More