Longman Dictionary of Contemporary English homepage

Date: 1200-1300
Language: Old French
Origin: confirmer, from Latin confirmare, from com- ( COM-) + firmare 'to make firm'

confirm

verb
     
con‧firm S2 W2 [transitive]
1 to show that something is definitely true, especially by providing more proof:
New evidence has confirmed the first witness's story.
To confirm my diagnosis I need to do some tests.
confirm that
Research has confirmed that the risk is higher for women.
confirm what
The new results confirm what most of us knew already.
2 to say that something is definitely true:
The President refused to confirm the rumor.
Managers have so far refused to confirm or deny reports that up to 200 jobs are to go.
confirm that
Walsh confirmed that the money had been paid.
confirm what
My brother will confirm what I have told you.
3 to tell someone that a possible arrangement, date, or situation is now definite or official:
Could you confirm the dates we discussed?
Smith was confirmed as the club's new manager yesterday.
confirm a booking/reservation/appointment
I am writing to confirm a booking for a single room for the night of 6 June.
4 to make you believe that your idea or feeling is right
confirm your fears/doubts/suspicions etc
This just confirms my worst fears.
confirm you in your belief/opinion/view etc (that) (=make you believe something more strongly)
The expression on his face confirmed me in my suspicions.
5

be confirmed

RRC to be made a full member of the Christian church in a special ceremony

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