hard to believe

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questionable adj.
unsubstantiated adj.

ADJECTIVE

questionable

Synonyms

STRONGEST

ambiguous arguable controversial debatable dubious problematic suspicious unproven vague

WEAK

apocryphal contingent controvertible cryptic disputable dubitable enigmatic equivocal fishy 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

ADJECTIVE

unsubstantiated

Synonyms

STRONGEST

debatable dubious unsupported

WEAK

arguable controversial disputable doubtful dubitable fishy iffy indefinite open to doubt 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.

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hard to believe

Yet, given this past week, it is hard to believe Anthropic is really ready to become a publicly traded company in coming weeks.

From The Wall Street Journal ● Sep. 13, 2026

Miller added: "It's hard to believe that you're going to see any serious movement before you have another Israeli government."

From BBC ● Aug. 10, 2026

It's hard to believe Kadeena Cox has not yet competed at a Commonwealth Games.

From BBC ● Jul. 22, 2026

It’s hard to believe that “The Pitt” earned a mere 13 nominations for its first season, winning for series, casting and for actors Noah Wyle, Katherine LaNasa and Shawn Hatosy.

From Los Angeles Times ● Jul. 7, 2026

It was hard to believe that after all these months, his wicked scheme was minutes away from fruition.

From "Artemis Fowl" by Eoin Colfer

hard to believe

Example Sentences

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