bona fide

• bonâ fide

• (UK) IPA^(key): /ˌbəʊ.nəˈfaɪ.di/
• (US) IPA^(key): /ˈboʊnə.faɪd/, /ˌboʊnəˈfaɪdi/, /ˈbɑnə.faɪd/, /ˈboʊnəˌfiːdeɪ/

• Audio (US)

  (file)

  ,

  Audio (US)

  (file)

• Audio (US)

  (file)

• Audio (AU)

  (file)

The pronunciation /ˈboʊnə.faɪd/, is the most common one in the USA and therefore listed first in American dictionaries, incl. American Heritage, Merriam-Webster, Webster's Third New International Dictionary, and the American version of Collins.[1]

From the Latin bonā fidē (“in good faith”), the ablative case of bona fidēs (“good faith”).

bona fide (not comparable)

1. In good faith; sincere; without deception or ulterior motive.

   Synonym: sincere

   Antonym: mala fide

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

2. Genuine; not counterfeit.

   Synonyms: authentic, genuine

   Antonyms: bogus, counterfeit

   This is a bona fide Roman coin.

   • 2000, O Brother Where Art Thou? (movie):

     Ulysses Everett McGill: I am the only daddy you got! I’m the damn pater familias!

     Wharvey Gal: But you ain’t bona fide!

Sometimes misspelled as *bonafied, by incorrectly analyzing as the past tense of assumed *bonafy.[2]

• bona fides
• mala fide

From Latin bona fide (“in good faith”), which is an ablative of bona fides (“good faith”).

• IPA^(key): [ˈbona ˈfɪdɛ]

bona fide

1. bona fide (in good faith)

• bona fide in Příruční slovník jazyka českého, 1935–1957
• bona fide in Slovník spisovného jazyka českého, 1960–1971, 1989