open to doubt

ADJECTIVE

questionable

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 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

ADJECTIVE

suspicious

Synonyms

STRONGEST

dubious questionable uncertain unsure unusual

WEAK

borderline debatable different disputable doubtable equivocal farfetched funny irregular not kosher open open to question out of line overt peculiar phony problematic reaching rings untrue shady shaky suspect too much uncommon won't wash

Antonyms

STRONGEST

certain clear definite secure sure undoubted

WEAK

believable indubious innocent palpable trustworthy trusty unquestionable

ADJECTIVE

unbelievable

Synonyms

STRONGEST

astonishing implausible impossible improbable inconceivable incredible outlandish preposterous too much unimaginable unthinkable

WEAK

beyond belief cockamamie cockeyed doubtful dubious far-fetched fishy flaky flimsy for the birds full of holes harebrained incogitable kooky lamebrained past belief phony questionable reaching scatterbrained screwy staggering suspect thick thin unconvincing unsubstantial weak won't hold water won't wash

Antonyms

STRONGEST

believable conceivable credible imaginable likely plausible possible reasonable tenable

WEAK

real

ADJECTIVE

unsubstantiated

Synonyms

STRONGEST

debatable dubious unsupported

WEAK

arguable controversial disputable doubtful dubitable fishy hard to believe iffy indefinite open to question suspect suspicious uncertain unconfirmed uncorroborated

Antonyms

STRONGEST

certain sure

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.

How much the U.N. has really accomplished in subsequent decades to manage a world of constant disorder, worsening inequality and impending ecological collapse is very much open to doubt.

From Salon • Sep. 28, 2025

Whether that is acceptable to United is open to doubt, although it is anticipated there will be more clarity on the situation in the coming week.

From BBC • Aug. 8, 2025

You have to get people to trust you when you don’t have an answer, when you are maybe more open to doubt than certainty.

From Los Angeles Times • Sep. 5, 2024

More often that not, verification of the practice is open to doubt.

From New York Times • Jul. 1, 2023

The London National Gallery, the Berlin and the Frankfort museums contain each a “Madonna and Child” ascribed to the master, but the attribution is in each case open to doubt.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 4 "Finland" to "Fleury, Andre" by Various

open to doubt

Example Sentences

Related Words