Affirm Definition

ə-fûrm

affirmed, affirming, affirms

verb

affirmed, affirming, affirms

To declare positively; assert to be true.

A philosopher affirming the existence of free will; a document affirming that each student has completed the course.

American Heritage

To say positively; declare firmly; assert to be true.

Webster's New World

To declare solemnly, but not under oath; make affirmation.

Webster's New World

To declare support for or belief in.

Affirm the right to self-determination.

American Heritage

To make valid; confirm; uphold; ratify (a law, decision, or judgment)

Webster's New World

Synonyms:

Antonyms:

Origin of Affirm

From Middle English, from Old French afermer, affermer, from Latin affirmare, adfirmare (“to present as fixed, aver, affirm”), from ad (“to”) + firmare (“to make firm”), from firmus (“firm”).

From Wiktionary
Middle English affermen from Old French afermer from Latin affirmāre ad- ad- firmāre to strengthen (from firmus strong dher- in Indo-European roots)

From American Heritage Dictionary of the English Language, 5th Edition