con·​firm | \ kən-ˈfərm How to pronounce confirm (audio) \
confirmed; confirming; confirms

Definition of confirm

transitive verb

1 : to give approval to : ratify confirm a treaty
2 : to make firm or firmer : strengthen confirm one's resolve
3 : to administer the rite of confirmation to
4 : to give new assurance of the validity of : remove doubt about by authoritative act or indisputable fact confirm a rumor confirm an order

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Other Words from confirm

confirmability \ kən-​ˌfər-​mə-​ˈbi-​lə-​tē How to pronounce confirmability (audio) \ noun
confirmable \ kən-​ˈfər-​mə-​bəl How to pronounce confirmable (audio) \ adjective

Choose the Right Synonym for confirm

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact. confirmed the reports corroborate suggests the strengthening of what is already partly established. witnesses corroborated his story substantiate implies the offering of evidence that sustains the contention. the claims have yet to be substantiated verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at. all statements of fact in the article have been verified authenticate implies establishing genuineness by adducing legal or official documents or expert opinion. handwriting experts authenticated the diaries validate implies establishing validity by authoritative affirmation or by factual proof. validated the hypothesis by experiments

Examples of confirm in a Sentence

The tests confirmed the doctors' suspicions of cancer. The attack confirmed her worst fears about the neighborhood. The award confirmed her status as one of the great movie actresses. The dentist's office called to confirm your appointment for tomorrow. We have a reservation for you for tomorrow night. Please call to confirm.
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Recent Examples on the Web

Initial reports were not good, with Liverpool boss Jurgen Klopp providing a gloomy update on the situation in his post-match comments, confirming that his keeper will have to undergo some further scans to asses the severity of the injury., "Early Indications Suggest Alisson Could Miss Six Weeks of Action With Possible Torn Calf," 10 Aug. 2019 The outlet reported that officials confirmed Epstein’s body was found around 7:30 a.m. Epstein was taken from the jail Saturday morning in cardiac arrest and died at a local hospital, CNN reported. Maria Pasquini,, "Jeffrey Epstein Dies by Apparent Suicide in Manhattan Jail: Reports," 10 Aug. 2019 The sources would not confirm how many missiles were launched. Fox News, "North Korea again fires projectiles into Sea of Japan, officials say," 10 Aug. 2019 White House officials would not confirm the authenticity of the Schoonover document, first obtained by the Washington Post., "Trump administration throws cold water on climate change threat to coral reefs in Florida," 9 Aug. 2019 Which Is The Best Star Wars Movie; Are Hot Dogs Sandwiches), confirm your selections, and then send them to print out. Lily Hay Newman, WIRED, "Hackers Take on Darpa's $10 Million Voting Machine," 9 Aug. 2019 Golden confirmed Twitter's suspension of the account and said despite the McConnell campaign's appeal, the company stood by its decision. Grace Segers, CBS News, "Twitter reinstates Mitch McConnell's campaign account," 9 Aug. 2019 The blowback came to a head in April, when ABC15 confirmed Ryan was aware of broken locks on cell doors at Lewis Prison that contributed to at least one inmate's death. Maria Polletta, azcentral, "Embattled Arizona Department of Corrections Director Chuck Ryan to step down," 9 Aug. 2019 Doctors in Wisconsin have confirmed new cases of lung disease tied to vaping, officials with the Wisconsin Department of Health Services said Thursday. Raquel Rutledge, Milwaukee Journal Sentinel, "New cases of severe lung injury in Wisconsin tied to vaping nicotine and THC," 8 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'confirm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of confirm

13th century, in the meaning defined at sense 1

History and Etymology for confirm

Middle English, from Anglo-French cunfermer, from Latin confirmare, from com- + firmare to make firm, from firmus firm

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Statistics for confirm

Last Updated

13 Aug 2019

Look-up Popularity

Time Traveler for confirm

The first known use of confirm was in the 13th century

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More Definitions for confirm



English Language Learners Definition of confirm

: to state or show that (something) is true or correct
: to tell someone that something has definitely happened or is going to happen : to make (something) definite or official
formal : to make (something) stronger or more certain : to cause (someone) to believe (something) more strongly


con·​firm | \ kən-ˈfərm How to pronounce confirm (audio) \
confirmed; confirming

Kids Definition of confirm

1 : to make sure of the truth of Their arrest confirms my suspicion.
2 : to make firm or firmer (as in a habit, in faith, or in intention) : strengthen The job at the shelter confirmed her intention to become a veterinarian.
3 : approve sense 2, accept Senators confirmed the treaty.
4 : to perform a ceremony admitting a person into a church or synagogue


transitive verb

Legal Definition of confirm

1a : to make valid by necessary formal approval the debtor's chapter 13 plan confirmed by the court
b : to vote approval of confirm a nomination
2 : to give formal acknowledgment of receipt of
3 : to remove doubt about by authoritative act or indisputable fact a consent decree confirming Capt. Brown's right to his cargo— W. G. Young

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More from Merriam-Webster on confirm

Rhyming Dictionary: Words that rhyme with confirm

Thesaurus: All synonyms and antonyms for confirm

Spanish Central: Translation of confirm

Nglish: Translation of confirm for Spanish Speakers

Britannica English: Translation of confirm for Arabic Speakers

Comments on confirm

What made you want to look up confirm? Please tell us where you read or heard it (including the quote, if possible).


to shake or wave menacingly

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