from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To support or establish the certainty or validity of; verify.
  • transitive v. To make firmer; strengthen: Working on the campaign confirmed her intention to go into politics.
  • transitive v. To make valid or binding by a formal or legal act; ratify.
  • transitive v. To administer the religious rite of confirmation to.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To strengthen; to make firm or resolute.
  • v. To confer the Christian sacrament of confirmation.
  • v. To assure the accuracy of previous statements.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To make firm or firmer; to add strength to; to establish.
  • transitive v. To strengthen in judgment or purpose.
  • transitive v. To give new assurance of the truth of; to render certain; to verify; to corroborate.
  • transitive v. To render valid by formal assent; to complete by a necessary sanction; to ratify.
  • transitive v. To administer the rite of confirmation to. See Confirmation, 3.

from The Century Dictionary and Cyclopedia

  • To make firm, or more firm; add strength to; strengthen: as, one's resolution is confirmed by the approval of another.
  • To settle or establish; render fixed or secure.
  • To make certain or sure; give new assurance of truth or certainty to; put past doubt; verify.
  • To certify or give assurance to; inform positively.
  • To sanction; ratify; consummate; make valid or binding by some formal or legal act: as, to confirm an agreement, promise, covenant, or title.
  • To strengthen in resolution, purpose, or opinion; fortify.
  • Eccles., to admit to the full privileges of church-membership by the imposition of hands; administer the rite of confirmation to. See confirmation, 1 .
  • Synonyms Corroborate, substantiate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. support a person for a position
  • v. administer the rite of confirmation to
  • v. establish or strengthen as with new evidence or facts
  • v. strengthen or make more firm
  • v. make more firm


Middle English confirmen, from Old French confermer, from Latin cōnfirmāre : com-, intensive pref.; see com- + firmāre, to strengthen (from firmus, strong).
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English, from Old French, from Latin confirmare ("to make firm, strenghten, establish"), from com- ("together") with firmare ("to make firm"), from firmus ("firm"). (Wiktionary)



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