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Definitions

questionable

[kwes-chuh-nuh-buhl] / ˈkwɛs tʃə nə bəl /
ADJECTIVE
doubtful, uncertain
Synonyms
STRONGEST
ambiguous arguable controversial debatable dubious problematic suspicious unproven vague
WEAK
apocryphal contingent controvertible cryptic disputable dubitable enigmatic equivocal fishy hard to believe hypothetical iffy indecisive indefinite indeterminate moot mysterious obscure occult open to doubt open to question oracular paradoxical problematical provisional shady suspect unconfirmed undefined under advisement under examination unreliable unsettled
Antonyms
STRONGEST
certain clear definite incontrovertible indubious sure trustworthy trusty undoubted unquestionable
WEAK
indisputable proven

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.

This questionable assumption can be psychologically scrutinized not only from Calvin’s point of view but also from his wife’s.

From Los Angeles Times • Apr. 21, 2026

But the Liverpool boss' decision was questionable, particularly given the way Liverpool threatened after the break once Gakpo came on.

From BBC • Apr. 14, 2026

A questionable outlet, the company obtained the results through a methodology so shady it verged on outright dishonesty: They used a definition of “tradwife” that bears no resemblance to the term’s actual meaning.

From Salon • Apr. 13, 2026

Don’t take his deal if it leaves you feeling queasy or questionable, especially if you don’t like your children being potentially dependent on the largesse of your husband.

From MarketWatch • Apr. 7, 2026

If you didn’t stop the epidemic in the prisons, he said, any lasting accomplishments with the outside population would be questionable.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French

Vocabulary lists containing questionable

"The Tragedy of Hamlet," Vocabulary from Act 1

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