Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “valid”

See all translations

valid

adjective uk   /ˈvæl.ɪd/ us  
B2 based on truth or reason; able to be accepted: a valid argument/criticism/reason My way of thinking might be different from yours, but it's equally valid.
Compare
B2 A ticket or other document is valid if it is based on or used according to a set of official conditions that often include a time limit: My passport is valid for another two years. having legal force: Is this contract/ticket/agreement still valid?
More examples
validity
noun [U] uk   /vəˈlɪd.ɪ.ti/ us    /vəˈlɪd.ə.t̬i/
C2 This research seems to give/lend some validity to the theory that the drug might cause cancer.
validly
adverb uk   /-li/ us  
(Definition of valid from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of valid?
Add Cambridge dictionaries to your browser to your website

Definitions of “valid” in other dictionaries

Word of the Day

white Christmas

a Christmas when it snows

Word of the Day

Cleavage proves divisive in Cambridge’s words of 2014

by Alastair Horne,
December 19, 2014
​​​​ Other dictionaries may choose faddish novelties as their words of the year, but here at Cambridge, we like to do something different. We look for the words that have seen sudden surges in searches over the course of the year – words that have been baffling users of English and driven them

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More