Definitions

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

  • adj. Made or carried out in good faith; sincere: a bona fide offer.
  • adj. Authentic; genuine: a bona fide Rembrandt. See Synonyms at authentic.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. In good faith.
  • adj. Genuine; not counterfeit.

from the GNU version of the Collaborative International Dictionary of English

  • In or with good faith; without fraud or deceit; real or really; actual or actually; genuine or genuinely.

from The Century Dictionary and Cyclopedia

  • n. In or with good faith; without fraud or deception; with sincerity; genuinely: frequently used as a compound adjective in the sense of honest; genuine; not make-believe.

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

  • adj. not counterfeit or copied
  • adj. undertaken in good faith

Etymologies

Latin bonā fidē : bonā, feminine ablative of bonus, good + fidē, ablative of fidēs, faith.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Latin bonā fidē (“in good faith”) which is the ablative of bona fidēs (“good faith”). (Wiktionary)

Examples

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  • The plural of "bona fide" (fem. ablative case of a 5th declension noun), which literally means "with good faith," is "bonis fidebus" (cf. bona fides).

    December 4, 2011

  • good dog.

    July 14, 2008