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

be in/out of luck

to be able/unable to have or do what you want

Word of the Day

A certain je ne sais quoi: French words and phrases used in English

by Liz Walter,
January 21, 2015
It is an odd irony that the more sophisticated your use of English is, the more likely you are to use French words and phrases. Or, to be more accurate, ones you know to be French – words such as ballet, au pair, abattoir, fiancé, café, and restaurant are so entrenched in

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