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Bona

[boh-nuh, -nah]
noun
  1. Bône, the former name of Annaba.
  2. Mount, a peak in S Alaska, in the Wrangell Mountains. 16,421 feet (5005 meters).
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bona fides

[boh-nah fee-des; English boh-nuh fahy-deez or especially for 2, boh-nuh-fahydz, bon-uh]
noun
  1. (italics) Latin. (used with a singular verb) good faith; absence of fraud or deceit; the state of being exactly as claims or appearances indicate: The bona fides of this contract is open to question.Compare mala fides.
  2. (sometimes italics) (used with a plural verb) the official papers, documents, or other items that prove authenticity, legitimacy, etc., as of a person or enterprise; credentials: All our bona fides are on file with the SEC.
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Can be confusedbona fide bona fides (see usage note at the current entry)

Usage note

Bona fides is originally a Latin phrase meaning “good faith.” Fides is singular in Latin and has been used as such in English. At least partially because its -es ending makes bona fides look and sound like a plural, it has developed the plural sense “credentials.” This plural use, although criticized by some usage guides, has been increasing in recent decades in all varieties of speech and writing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for bona

Bona

noun
  1. Mount Bona a mountain in S Alaska, in the Wrangell Mountains. Height: 5005 m (16 420 ft)
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bona fides

noun
  1. law good faith; honest intention
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Word Origin for bona fides

Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bona

bona fides

n.

by 1838, English pluralization of bona fide, as though it were a noun meaning "guarantee of good faith."

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Online Etymology Dictionary, © 2010 Douglas Harper