/ kənˈfɜːm; NAmE -ˈfɜːrm/ verb
1.
to state or show that sth is definitely true or correct, especially by providing evidence :
[ vn ]
Rumours of job losses were later confirmed
His guilty expression confirmed my suspicions.
Please write to confirm your reservation (= say that it is definite) .
[ v ( that )]
Has everyone confirmed (that) they're coming?
[ v wh- ]
Can you confirm what happened?
[ vn that ]
It has been confirmed that the meeting will take place next week.
2.
[ vn ] confirm sth | confirm sb (in sth) to make sb feel or believe sth even more strongly :
The walk in the mountains confirmed his fear of heights.
3.
[ vn ] to make a position, an agreement, etc. more definite or official; to establish sb/sth firmly :
After a six-month probationary period, her position was confirmed.
He was confirmed as captain for the rest of the season.
4.
[ vn ] [ usually passive ] to make sb a full member of the Christian Church :
She was baptized when she was a month old and confirmed when she was thirteen.
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WORD ORIGIN
Middle English : from Old French confermer , from Latin confirmare , from con- together + firmare strengthen (from firmus firm).