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questionable

[kwes-chuh-nuh-buh l]
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adjective
  1. of doubtful propriety, honesty, morality, respectability, etc.: questionable activities; in questionable taste.
  2. open to question or dispute; doubtful or uncertain: a statement of questionable accuracy.
  3. open to question as to being of the nature or value suggested: a questionable privilege.
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Origin of questionable

First recorded in 1580–90; question + -able
Related formsques·tion·a·ble·ness, ques·tion·a·bil·i·ty, nounques·tion·a·bly, adverb

Synonyms

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2. debatable, disputable, controvertible, dubitable, dubious.

Antonyms

1. certain.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for questionability

questionable

adjective
  1. (esp of a person's morality or honesty) admitting of some doubt; dubious
  2. of disputable value or authoritya questionable text
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Derived Formsquestionableness or questionability, nounquestionably, adverb
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 questionability

questionable

adj.

1580s, "that may be interrogated;" c.1600, "open to dispute, doubtful," from question (v.) + -able. Deprecatory sense of "dubious in character" is attested from 1806. Related: Questionably.

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Online Etymology Dictionary, © 2010 Douglas Harper