bona fides

noun
bo·​na fi·​des | \ ˌbō-nə-ˈfī-ˌdēz How to pronounce bona fides (audio) , ÷ˈbō-nə-ˌfīdz How to pronounce bona fides (audio) \

Definition of bona fides

1 : good faith : sincerity
2 : the fact of being genuine often plural in construction
3 : evidence of one's good faith or genuineness often plural in construction
4 : evidence of one's qualifications or achievements often plural in construction

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Did You Know?

Bona fides looks like a plural word in English, but in Latin, it's a singular noun that literally means "good faith." When bona fides entered English, it at first stayed very close to its Latin use - it was found mostly in legal contexts and it meant "honesty or lawfulness of purpose," just as it did in Latin. It also retained its singular construction. Using this original sense one might speak of "a claimant whose bona fides is unquestionable," for example. But in the 20th century, use of bona fides began to widen, and it began to appear with a plural verb in certain contexts. For example, a sentence such as "the informant's bona fides were ascertained" is now possible.

Examples of bona fides in a Sentence

Recent Examples on the Web

And Trish Zornio, a scientist, has been critical of Hickenlooper’s science bona fides. Justin Wingerter, The Denver Post, "The Democratic race to be the anti-Hickenlooper within Colorado’s race for Senate," 5 Sep. 2019 Harris also pointed to her tenure as California attorney general to bolster her climate bona fides. Melanie Mason, Los Angeles Times, "Kamala Harris releases $10-trillion plan to fight climate change," 4 Sep. 2019 Because on the heels of his sterling Gold Cup, and with his professional bona fides cemented, European clubs came calling. Brian Straus, SI.com, "Aaron's Long Road: USMNT, Red Bulls Center Back's Unlikely Journey," 4 Sep. 2019 Indeed, a quick search of Olson’s political career seems to afford him conservative bona fides. Dave Orrick, Twin Cities, "Former Michigan lawmaker Rick Olson to challenge Angie Craig for Congress," 3 Sep. 2019 Recombinetics touted them as a bona fide, 100%-bovine success story. Beth Mole, Ars Technica, "Part cow, part… bacterium? Biotech company makes heifer of gene-editing blunder," 1 Sep. 2019 The Obama–Biden ticket had more than enough biracial bona fides to cover a multitude of old sins and associations. Kevin D. Williamson, National Review, "Joe Biden, Designated White Guy," 13 Aug. 2019 Publicly, both Google and Apple have touted their privacy bona fides recently — but there’s often a fundamental impasse between privacy and convenience. Rani Molla, Vox, "Why you have to keep logging in to read news on your phone," 8 July 2019 Defensive end Kentavius Street is transforming from weight-room marvel to a bona fide roster candidate. Cam Inman, The Mercury News, "Five questions for 49ers vs. Chiefs," 23 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bona fides.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of bona fides

1665, in the meaning defined at sense 1

History and Etymology for bona fides

Latin, literally, good faith

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More Definitions for bona fides

bona fides

noun

English Language Learners Definition of bona fides

formal : evidence which shows that what you have said about yourself is true : evidence showing that you deserve a position or that you can be trusted

bona fides

noun
bo·​na fi·​des | \ ˌbō-nə-ˈfī-ˌdēz, commonly ˈbō-nə-ˌfīdz How to pronounce bona fides (audio) \

Legal Definition of bona fides

: good faith the fact that the plaintiff conducted an investigation demonstrated its bona fidesJeannette Glass Co. v. Indemnity Ins. Co. of North America, 88 A.2d 407 (1952) (dissent)

History and Etymology for bona fides

Latin