Tra từ confirm - Từ điển Oxford Advanced Learner 8th

con·firm AW [confirm confirms confirmed confirming] BrE [kənˈfɜːm] NAmE [kənˈfɜːrm] verb
1. to state or show that sth is definitely true or correct, especially by providing evidence
•~ sth Rumours of job losses were later confirmed
• His guilty expression confirmed my suspicions.
• Please write to confirm your reservation (= say that it is definite).
•~ (that)… Has everyone confirmed (that) they're coming?
•~ what/when, etc… Can you confirm what happened?
•it is confirmed that… It has been confirmed that the meeting will take place next week.
2. ~ sth | ~ sb (in sth) to make sb feel or believe sth even more strongly
• The walk in the mountains confirmed his fear of heights.
3. to make a position, an agreement, etc. more definite or official; to establish sb/sth firmly
•~ sth After a six-month probationary period, her position was confirmed.
•~ sb as sth He was confirmed as captain for the rest of the season.
•~ sb in sth I'm very happy to confirm you in your post.
4. usually passive ~ sb 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.
Verb forms:

Word Origin:
Middle English: from Old French confermer, from Latin confirmare, from con- ‘together’ + firmare ‘strengthen’ (from firmus ‘firm’).

Thesaurus:
confirm verb
1. T
•His guilty expression confirmed my suspicions.
support • |formal substantiate • • validate • • corroborate • • authenticate •
Opp: disprove, (formal)Opp: refute
confirm/validate/authenticate sth as sth
confirm/support/substantiate/corroborate what …
confirm/support/substantiate/validate/corroborate/authenticate a claim
2. T
•Rumours of job losses were later confirmed.
back sb/sth up • |especially BrE bear sb/sth out • |formal verify • • certify • • testify • • vouch for sb/sth •
Opp: deny
confirm/verify/certify sth as sth
confirm/bear out/verify/certify/testify that…
confirm/back up/bear out/verify a claim/statement/theory/story/point
3. T
•He was confirmed as captain for the season.
approve • • recognize • |formal uphold • • ratify •
confirm/approve/recognize/uphold/ratify sth as sth
confirm/uphold/ratify a/an decision/agreement
officially confirm/approve/recognize/ratify sth

Example Bank:
•I wanted to find a way to experimentally confirm the results.
•The plans were officially confirmed yesterday.
•These new symptoms tend to confirm my original diagnosis.
•These results were independently confirmed in a study of 48 patients.
•This latest tragedy merely confirms my view that the law must be tightened.
•Your veterinarian will suggest some tests to help confirm the diagnosis.
•Both teams played badly, which confirms the impression left by earlier games.
•Has everyone confirmed that they're coming?
•It has been confirmed that Moore's next fight will be against Michael Jones.
•Please write to confirm your reservation.
•Rumours of job losses were later confirmed.
•The doctor confirmed my suspicions and prescribed an antibiotic.
•The results confirm the findings of our earlier research.