Dictionary.com
definitions
  • synonyms

questionable

[kwes-chuh-nuh-buh l]
See more synonyms for questionable on Thesaurus.com
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.
Show More

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

See more synonyms for questionable on Thesaurus.com
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
Show More
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.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper