- to establish the truth, accuracy, validity, or genuineness of; corroborate; verify: This report confirms my suspicions.
- to acknowledge with definite assurance: Did the hotel confirm our room reservation?
- to make valid or binding by some formal or legal act; sanction; ratify: to confirm a treaty; to confirm her appointment to the Supreme Court.
- to make firm or more firm; add strength to; settle or establish firmly: Their support confirmed my determination to run for mayor.
- to strengthen (a person) in habit, resolution, opinion, etc.: The accident confirmed him in his fear of driving.
- to administer the religious rite of confirmation to.
Origin of confirm
SynonymsSee more synonyms for on Thesaurus.com
Related Wordscertify, uphold, affirm, verify, explain, substantiate, back, sign, corroborate, establish, endorse, approve, support, assure, attest, buy, okay, debunk, underpin, bless
Examples from the Web for confirm
DNA tests were used to confirm Albert's status as father in both cases, following protracted legal battles.Princess Charlene Gives Birth To Twins Gabriella and Jacques
December 10, 2014
Prosecutor Alessandro Leopizzi wasted no time in repeating the transcript to ask Schettino to confirm his words.The Costa Concordia’s Randy Reckless Captain Takes the Stand
Barbie Latza Nadeau
December 2, 2014
Blood spatters on the pavement seem to confirm that he was moving toward Wilson when the instantly fatal shot was fired.90 Seconds of Fury in Ferguson Are the Key to Making Peace in America
November 26, 2014
Just three Republicans out of 44 voted to confirm Hagel, himself a former GOP senator.The Coming Battle for a New SecDef
November 25, 2014
Hagel declined to confirm or deny whether Baghdadi was, in fact, among the living.The Pentagon Is Officially Clueless About the ISIS War
November 13, 2014
Percival read them all hungrily, disregarding those that did not confirm his own opinions.The Spenders
Harry Leon Wilson
But the lapse of a few months will confirm or dispel their fears.
He could not have chosen a more opportune time to confirm his own undoing.Howard Pyle's Book of Pirates
Heyward was not slow to confirm an opinion that was so favorable to his own pretensions.The Last of the Mohicans
James Fenimore Cooper
And if it be impossible to assign any, this will serve to confirm our suspicion.
- (may take a clause as object) to prove to be true or valid; corroborate; verify
- (may take a clause as object) to assert for a second or further time, so as to make more definitehe confirmed that he would appear in court
- to strengthen or make more firmhis story confirmed my doubts
- to make valid by a formal act or agreement; ratify
- to administer the rite of confirmation to
Word Origin and History for confirm
mid-13c., confirmyn "to ratify," from Old French confermer (13c., Modern French confirmer) "strengthen, establish, consolidate; affirm by proof or evidence; anoint (a king)," from Latin confirmare "make firm, strengthen, establish," from com-, intensive prefix (see com-), + firmare "to strengthen," from firmus (see firm (adj.)). Related: Confirmative; confirmatory.