affirm

verb

af·​firm ə-ˈfərm How to pronounce affirm (audio)
affirmed; affirming; affirms
Synonyms of affirmnext

transitive verb

1
a
: validate, confirm
He was affirmed as a candidate.
b
: to state positively
He affirmed his innocence.
2
: to assert (something, such as a judgment or decree) as valid or confirmed
The court affirmed his conviction.
3
: to show or express a strong belief in or dedication to (something, such as an important idea)
laws affirming the racial equality of all people

intransitive verb

1
: to testify or declare by affirmation (see affirmation sense 2) as distinguished from swearing an oath
2
: to uphold a judgment or decree of a lower court
affirmable adjective
affirmance noun
Choose the Right Synonym for affirm

assert, declare, affirm, protest, avow mean to state positively usually in anticipation of denial or objection.

assert implies stating confidently without need for proof or regard for evidence.

asserted that modern music is just noise

declare stresses open or public statement.

declared her support for the candidate

affirm implies conviction based on evidence, experience, or faith.

affirmed the existence of an afterlife

protest emphasizes affirming in the face of denial or doubt.

protested that he really had been misquoted

avow stresses frank declaration and acknowledgment of personal responsibility for what is declared.

avowed that all investors would be repaid in full

Examples of affirm in a Sentence

We cannot affirm that this painting is genuine. They neither affirmed nor denied their guilt. laws affirming the racial equality of all peoples They continued to affirm their religious beliefs. The decision was affirmed by a higher court.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Just prior to the vote on Senate Bill 14, which bans gender-affirming health care for transgender youth and ultimately became law, Department of Public Safety officers detained Evans for questioning, the complaint said. Brieanna J. Frank, USA Today, 30 Dec. 2025 There was a kind of collective effort to affirm that something terrible had happened, much worse than ordinary criminal damage. Rosa Lyster, Harpers Magazine, 30 Dec. 2025 Medicaid programs in slightly less than half of states currently cover gender-affirming care. Ali Swenson The Associated Press, Arkansas Online, 25 Dec. 2025 The lawsuit alleges that HHS’s declaration seeks to coerce providers to stop providing gender-affirming care and circumvent legal requirements for policy changes. Ali Swenson, Twin Cities, 24 Dec. 2025 See All Example Sentences for affirm

Word History

Etymology

alteration (conformed to Latin affirmāre) of Middle English affermen "to fix firmly, make steadfast, establish, confirm, assert," borrowed from Anglo-French afermer, affermer, going back to Latin affirmāre "to strengthen, confirm, assert positively," from ad- ad- + firmāre "to strengthen, fortify," derivative of firmus "strong, durable, firm entry 1"

First Known Use

14th century, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of affirm was in the 14th century

Cite this Entry

“Affirm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/affirm. Accessed 31 Dec. 2025.

Kids Definition

affirm

verb
af·​firm ə-ˈfərm How to pronounce affirm (audio)
: to state positively or with confidence
affirmation
ˌaf-ər-ˈmā-shən
noun

Legal Definition

affirm

transitive verb
af·​firm ə-ˈfərm How to pronounce affirm (audio)
1
: to assert as true or factual
2
: to assert (as a judgment) as valid or confirmed
affirmed the lower court's ruling
compare remand, reverse

intransitive verb

1
: to make a solemn declaration under the penalties of perjury in place of swearing an oath to which one conscientiously objects
2
: to uphold the judgment or actions of a lower court
the appeals court affirmed
affirmance noun
affirmation noun

More from Merriam-Webster on affirm

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