Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “confirm”

See all translations

confirm

verb uk   /kənˈfɜːm/ us    /-ˈfɝːm/

confirm verb (MAKE CERTAIN)

B1 [I or T] to make an arrangement or meeting certain, often by phone or writing: [+ that] Six people have confirmed that they will be attending and ten haven't replied yet. Flights should be confirmed 48 hours before departure. I've accepted the job over the phone, but I haven't confirmed in writing yet.
More examples

confirm verb (PROVE TRUE)

B2 [T] to prove that a belief or an opinion that was previously not completely certain is true: [+ question word] The smell of cigarette smoke confirmed what he had suspected: there had been a party in his absence. [+ (that)] Her announcement confirmed (that) she would be resigning as prime minister. The leader's speech was impressive and confirmed her faith in the party.
More examples

confirm verb (RELIGION)

[T] to accept someone formally as a full member of the Christian Church at a special ceremony
(Definition of confirm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of confirm?
Add Cambridge dictionaries to your browser to your website

Definitions of “confirm” in other dictionaries

Word of the Day

beginner's luck

unexpected success experienced by a person who is just starting a particular activity

Word of the Day

Think long and hard; the language of decisions

by Liz Walter,
January 28, 2015
One of the best ways (perhaps the best way) to improve your English is to learn how words go together in phrases, idioms, or other patterns such as verb/noun or adjective/noun pairs (often called ‘collocations’). This blog looks at some useful phrases and collocations connected with the subject of decisions, something we

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More