Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “reason”

reason

noun (JUDGMENT)    /ˈriː.zən/
[U] the ability of a healthy mind to think and make judgments, especially based on practical facts: We humans believe that we are the only animals to have the power of reason.mainly UK old-fashioned He lost his reason (= became mentally ill) when both his parents were killed in the crash.Mind and personalityScience of psychology and psychoanalysis within reason C2 within the limits of what is acceptable and possible: We can wear anything we like to the office, within reason.Suitable and acceptableQuite good, or not very good
(Definition of reason noun (JUDGMENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of reason

Definitions of “reason” in other dictionaries

Word of the Day

navigate

to direct the way that a ship, aircraft, etc. will travel, or to find a direction across, along, or over an area of water or land, often by using a map

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More