confirm

[kuhn-furm]
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verb (used with object)
  1. to establish the truth, accuracy, validity, or genuineness of; corroborate; verify: This report confirms my suspicions.
  2. to acknowledge with definite assurance: Did the hotel confirm our room reservation?
  3. 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.
  4. to make firm or more firm; add strength to; settle or establish firmly: Their support confirmed my determination to run for mayor.
  5. to strengthen (a person) in habit, resolution, opinion, etc.: The accident confirmed him in his fear of driving.
  6. to administer the religious rite of confirmation to.

Origin of confirm

1250–1300; < Latin confirmāre to strengthen, confirm (see con-, firm1); replacing Middle English confermen < Old French < Latin, as above
Related formscon·firm·a·ble, adjectivecon·firm·a·bil·i·ty, nouncon·firm·er; Law. con·fir·mor [kon-fer-mawr, kuhn-fur-mer] /ˌkɒn fərˈmɔr, kənˈfɜr mər/, nouncon·firm·ing·ly, adverbnon·con·firm·ing, adjectivepre·con·firm, verb (used with object)re·con·firm, verb (used with object)un·con·firm, verb (used with object)un·con·firm·a·bil·i·ty, noun

Synonyms for confirm

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Antonyms for confirm

confirmed

[kuh n-furmd]
adjective
  1. made certain as to truth, accuracy, validity, availability, etc.: confirmed reports of new fighting at the front; confirmed reservations on the three o'clock flight to Denver.
  2. settled; ratified.
  3. firmly established in a habit or condition; inveterate: a confirmed bachelor.
  4. given additional determination; made resolute.
  5. having received the religious rite of confirmation.

Origin of confirmed

First recorded in 1350–1400, confirmed is from the Middle English word confermyd. See confirm, -ed2
Related formscon·firm·ed·ly [kuh n-fuhr-mid-lee] /kənˈfʌr mɪd li/, adverbcon·firm·ed·ness [kuh n-fur-mid-nis, -furmd-] /kənˈfɜr mɪd nɪs, -ˈfɜrmd-/, nounun·con·firmed, adjectivewell-con·firmed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


Examples from the Web for unconfirmed

Contemporary Examples of unconfirmed

Historical Examples of unconfirmed


British Dictionary definitions for unconfirmed

unconfirmed

adjective
  1. not confirmed; uncorroboratedunconfirmed reports

confirm

verb (tr)
  1. (may take a clause as object) to prove to be true or valid; corroborate; verify
  2. (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
  3. to strengthen or make more firmhis story confirmed my doubts
  4. to make valid by a formal act or agreement; ratify
  5. to administer the rite of confirmation to
Derived Formsconfirmable, adjectiveconfirmatory or confirmative, adjectiveconfirmer, noun

Word Origin for confirm

C13: from Old French confermer, from Latin confirmāre, from firmus firm 1

confirmed

adjective
  1. (prenominal) long-established in a habit, way of life, etca confirmed bachelor
  2. having received the rite of confirmation
  3. (of a disease) another word for chronic
Derived Formsconfirmedly (kənˈfɜːmɪdlɪ), adverbconfirmedness (kənˈfɜːmɪdnɪs, -ˈfɜːmd-), noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unconfirmed
adj.

1560s, "not having received the rite of confirmation," from un- (1) "not" + confirmed. Meaning "not supported by further evidence" is attested from 1670s.

confirm

v.

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.

confirmed

adj.

late 14c., of diseases, "firmly established," past participle adjective from confirm. Of persons and their habits, from 1826.

Online Etymology Dictionary, © 2010 Douglas Harper