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See more synonyms for affirm on Thesaurus.com
verb (used with object)
  1. to state or assert positively; maintain as true: to affirm one's loyalty to one's country; He affirmed that all was well.
  2. to confirm or ratify: The appellate court affirmed the judgment of the lower court.
  3. to assert solemnly: He affirmed his innocence.
  4. to express agreement with or commitment to; uphold; support: to affirm human rights.
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verb (used without object)
  1. Law.
    1. to state something solemnly before a court or magistrate, but without oath.
    2. to ratify and accept a voidable transaction.
    3. (of an appellate court) to determine that the action of the lower court shall stand.
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Origin of affirm

1300–50; < Latin affirmāre, equivalent to af- af- + firmāre to make firm (see firm1); replacing Middle English a(f)fermen < Middle French afermer < Latin
Related formsaf·firm·a·ble, adjectiveaf·firm·a·bly, adverbaf·firm·er, nounaf·firm·ing·ly, adverbo·ver·af·firm, verbpre·af·firm, verbre·af·firm, verb (used with object)un·af·firmed, adjective

Synonyms for affirm

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Synonym study

1. See declare.

Antonyms for affirm

1. deny.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for affirmed

repeat, confirm, ratify, insist, assert, maintain, profess, declare, guarantee, attest, predicate, avow, set, avouch, certify, pronounce, vouch, ice, testify, state

Examples from the Web for affirmed

Contemporary Examples of affirmed

Historical Examples of affirmed

  • Many, indeed, affirmed that the process was already near its consummation.

    The Man of Adamant

    Nathaniel Hawthorne

  • "You were right," affirmed Kirkwood, with a rueful and crooked smile.

    The Black Bag

    Louis Joseph Vance

  • "I was born in San Francisco," affirmed Kirkwood a bit sadly.

    The Black Bag

    Louis Joseph Vance

  • With energetic gestures he affirmed that his Padrona was just as usual.

    A Spirit in Prison

    Robert Hichens

  • Keturah affirmed that the captain's stay had been a real pleasure.

    Cy Whittaker's Place

    Joseph C. Lincoln

British Dictionary definitions for affirmed


verb (mainly tr)
  1. (may take a clause as object) to declare to be true; assert positively
  2. to uphold, confirm, or ratify
  3. (intr) law to make an affirmation
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Derived Formsaffirmer or affirmant, noun

Word Origin for affirm

C14: via Old French from Latin affirmāre to present (something) as firm or fixed, assert, from ad- to + firmāre to make firm 1
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 affirmed



c.1300, from Old French afermier (Modern French affirmer) "affirm, confirm; strengthen, consolidate," from Latin affirmare "to make steady, strengthen," figuratively "confirm, corroborate," from ad- "to" (see ad-) + firmare "strengthen, make firm," from firmus "strong" (see firm (adj.)). Spelling refashioned 16c. in French and English on Latin model. Related: Affirmed; affirming.

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Online Etymology Dictionary, © 2010 Douglas Harper