Confirm Definition

kən-fûrm

confirmed, confirms

verb

confirmed, confirms

To prove the truth, validity, or authenticity of; verify.

Webster's New World

To reaffirm the establishment of (a reservation or advance arrangement).

American Heritage

To make firm; strengthen; establish; encourage.

Webster's New World

To make valid by formal approval; ratify.

Webster's New World

To cause to undergo the religious ceremony of confirmation.

Webster's New World

Synonyms:

Antonyms:

Origin of Confirm

Middle English confirmen from Old French confermer from Latin cōnfirmāre com- intensive pref. com– firmāre to strengthen (from firmus strong dher- in Indo-European roots)

From American Heritage Dictionary of the English Language, 5th Edition
From Middle English, from Old French confermer, from Latin confirmāre (“to make firm, strenghten, establish”), from com- (“together”) with firmare (“to make firm”), from firmus (“firm”).

From Wiktionary