- The definition of affirm is to state something to be true.
To show proof of one's age and date of birth for the purchase of alcohol is an example of to affirm.
affirm definition by Webster's New World
- to say positively; declare firmly; assert to be true
- to make valid; confirm; uphold; ratify (a law, decision, or judgment)
Origin: Middle English affermen ; from Old French affermer ; from Classical Latin affirmare, to present as fixed ; from ad-, to plush firmare, to make firm ; from firmus: see firm
affirm definition by American Heritage Dictionary
verb af·firmed, af·firm·ing, af·firms verb, transitive
- To declare positively or firmly; maintain to be true.
- To support or uphold the validity of; confirm.
Origin: Middle English affermen, from Old French afermer, from Latin affirmāre : ad-, ad- + firmāre, to strengthen (from firmus, strong; see dher- in Indo-European roots).
- af·firmˈa·ble adjective
- af·firmˈa·bly adverb
- af·firˈmant adjective & n.
- af·firmˈer noun
affirm - Legal Definition
- To confirm, ratify, or otherwise approve a lower court’s decision on appeal.
- To solemnly declare that certain statements are true or that one will testify truthfully.
- To make a solemn promise. See also oath.