bona fide

UK/ˌbəʊ.nəˈfaɪ.di/US/ˈboʊnə.faɪd/US/ˌboʊnəˈfaɪdi/US/ˈbɑnə.faɪd/

adverb

In good faith; genuinely, sincerely.

“This is a bona fide Roman coin.”

Meanings

adverbbona fide (not comparable)

alternative rare bonâ fide · alternative obsolete bona fyde

  1. not comparableIn good faith; genuinely, sincerely.

    But by the knots I am speaking of, may it please your reverences to believe, that I mean good, honest, devilish tight, hard knots, made bona fide, as Obadiah made his; […]

    1761, [Laurence Sterne], chapter X, in The Life and Opinions of Tristram Shandy, Gentleman, volume III, London: […] R[obert] and J[ames] Dodsley […], →OCLC, pages 29–30
    1 more example

    Let thinking people, then, judge what must be the fate of a church, whose fundamental doctrines are disbelieved by men of sense and inquiry, whose articles are well known not to be subscribed bonâ fide by those who officiate in it […].

    1791, Joseph Priestley, Letters to Burke, section XII

    Synonyms: bonafidely

adjectivebona fide (not comparable)

alternative rare bonâ fide · alternative obsolete bona fyde

  1. not comparableIn good faith; sincere; without deception or ulterior motive.

    Although he failed, the prime minister made a bona fide attempt to repair the nation's damaged economy.

    1 more example

    It is impossible to say how far this adherence to a creed is a bona fide reversion to a devout habit of mind, and how far it is to be classed as a case of protective mimicry assumed for the purpose of an outward assimilation to canons of reputability borrowed from foreign ideals.

    1899, Thorstein Veblen, “Devout Observances”, in The Theory of the Leisure Class […] , New York: Macmillan, →OCLC

    Synonyms: sincere · Antonyms: mala fide

  2. not comparableGenuine; not counterfeit.

    This is a bona fide Roman coin.

    3 more examples

    To Billy Byrne, then, Pesita was a real general, and Billy, himself, a bona fide captain.

    1914 October – 1916 July, Edgar Rice Burroughs, The Mucker, Chicago, Ill.: A[lexander] C[aldwell] McClurg & Co., published 31 October 1921, →OCLC

    What intrigues us is what will happen when the ersatzes for the ersatzes come along. Will characters start substituting for actors, bona fide dogs for barking ladies; will people start looking at people again instead of television and at nature instead of at documentaries?

    1955 June 30, “Ersatzes for Ersatzes”, in The Christian Science Monitor, volume 47, number 182

    Ulysses Everett McGill: I am the only daddy you got! I’m the damn pater familias! Wharvey Gal: But you ain’t bona fide!

    2000, Joel Coen, Ethan Coen, O Brother, Where Art Thou?

    Synonyms: authentic, genuine · Antonyms: bogus, counterfeit

Synonyms & antonyms

adverbIn good faith; genuinely, sincerely.

Similar

adjectiveIn good faith; sincere; without deception or ulterior motive.

Similar
Opposite

adjectiveGenuine; not counterfeit.

More synonyms by meaning

adjectiveundertaken in good faith

Similar

adjectivenot counterfeit or copied

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinbonā fidē“in good faith”
  2. Englishbona fide

Unadapted borrowing from Latin bonā fidē (“in good faith”).

Full word history & related roots →

Translations

Arabic عن حسن نيَة
  • عن حسن نيَةdone in good faith
Chinese Mandarin 善意
  • 善意 (shànyì)done in good faith
Czech bona fide, v dobrém úmyslu
  • bona fidedone in good faith
  • v dobrém úmysludone in good faith
  • pravýgenuine
Danish i god tro, bona fide
  • i god trodone in good faith
  • bona fidedone in good faith
Dutch oprecht, echt
  • oprechtdone in good faith
  • echtgenuine
Finnish vilpitön, aito
  • vilpitöndone in good faith
  • aitogenuine
French sincère, authentique
  • sincèredone in good faith; genuinely; sincerely
  • authentiquedone in good faith; genuinely; sincerely
  • de bonne foidone in good faith
  • véritablegenuine
  • authentiquegenuine
German auf Treu und Glauben, guten Glaubens
  • auf Treu und Glaubendone in good faith; genuinely; sincerely
  • guten Glaubensdone in good faith; genuinely; sincerely
  • in gutem Glaubendone in good faith; genuinely; sincerely
  • glaubwürdigdone in good faith
  • ehrlich gemeintdone in good faith
  • glaubhaftdone in good faith
  • echtdone in good faith
  • echtgenuine
  • authentischgenuine
  • wahrhaftiggenuine
  • originalgenuine
Hungarian jóhiszeműen, jóhiszemű
  • jóhiszeműendone in good faith; genuinely; sincerely
  • jóhiszeműdone in good faith
  • valódigenuine
  • igazigenuine
Icelandic gerður í góðri trú, ósvikinn
  • gerður í góðri trúdone in good faith
  • ósvikinngenuine
Italian in buona fede, genuino
  • in buona fededone in good faith
  • genuinogenuine
  • autenticogenuine
Norwegian ekte, autentisk
  • ektegenuine
  • autentiskgenuine
Norwegian Bokmål i god tro, bona fide
  • i god trodone in good faith
  • bona fidedone in good faith
Polish prawdziwy
  • prawdziwygenuine
Portuguese em boa fé, genuíno
  • em boa fédone in good faith
  • genuínogenuine
Russian добросо́вестный, настоя́щий
  • добросо́вестный (dobrosóvestnyj)done in good faith
  • настоя́щий (nastojáščij)genuine
Slovak dobre myslený, pravý
  • dobre myslenýdone in good faith
  • pravýgenuine
Spanish de buena fe
  • de buena fedone in good faith
Swedish äkta
  • äktagenuine
Turkish iyi niyetle, samimiyetle
  • iyi niyetledone in good faith
  • samimiyetledone in good faith
Ukrainian добросо́вісний
  • добросо́вісний (dobrosóvisnyj)done in good faith
Cite this entry
APA

bona fide. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/bona%20fide

MLA

“bona fide.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bona%20fide. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “bona fide,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/bona%20fide.

Source: bona fide on Wiktionary, CC BY-SA 4.0.