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Synonyms

questionable

American  
[kwes-chuh-nuh-buhl] / ˈkwɛs tʃə nə bəl /

adjective

  1. of doubtful propriety, honesty, morality, respectability, etc..

    questionable activities; in questionable taste.

    Antonyms:
    certain
  2. open to question or dispute; doubtful or uncertain.

    a statement of questionable accuracy.

    Synonyms:
    dubious, dubitable, controvertible, disputable, debatable
  3. open to question as to being of the nature or value suggested.

    a questionable privilege.


questionable British  
/ ˈkwɛstʃənəbəl /

adjective

  1. (esp of a person's morality or honesty) admitting of some doubt; dubious

  2. of disputable value or authority

    a questionable text

"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

Other Word Forms

Etymology

Origin of questionable

First recorded in 1580–90; question + -able

Explanation

Something that's questionable is uncertain or hard to believe. If a politician says things you doubt are true, you might describe his words as questionable. You might say that it's questionable whether you'll reach your goal of getting straight A's in school, or secretly believe that everything your history teacher says is slightly questionable. In either case, you're highly doubtful. You can even describe a person as questionable, if he or she doesn't strike you as completely honest. The original meaning of the word was "that may be interrogated," from the Latin root word quaestionem, "a seeking, inquiry, questioning, or examination."

Keep Reading on Vocabulary.com

Vocabulary lists containing questionable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Half-time at a football game is normally a chance to grab a drink or snack, make a mad dash for the toilets or vent with friends about some questionable refereeing or defending.

From BBC Jul. 19, 2026

The bill purports to end practices of questionable value, and the press announcement makes the bill out to be an effort at saving taxpayers money.

From The Wall Street Journal Jul. 9, 2026

They may sell advisory services of questionable value.

From Salon Jul. 9, 2026

The report noted that several companies that previously banned their technology from military uses have "gradually reversed course," including Anthropic, which the report criticized for having "questionable military engagements."

From Barron's Jul. 7, 2026

But then you felt everything Hoagland said was apocryphal, always questionable.

From "Native Speaker" by Chang-rae Lee