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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.

James was questionable as he manages a chronic left foot injury.

From Los Angeles Times • Apr. 7, 2026

Its director’s past actions are more than questionable.

From Salon • Apr. 3, 2026

Those practices saw the original premise of social media—an extension of our proverbial kitchen table—replaced with ethically questionable and legally dubious methodologies.

From The Wall Street Journal • Apr. 1, 2026

As we see it, the bigger challenge facing Phreesia is the continuing repricing in the market toward these types of small-cap tech names with a questionable competitive moat.

From Barron's • Mar. 31, 2026

“In the future, please avoid seeing your questionable friends,” Colonel Kenneth Nichols told Oppenheimer.

From "Bomb" by Steve Sheinkin

Vocabulary lists containing questionable

"The Tragedy of Hamlet," Vocabulary from Act 1

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