inconceivable

[in-kuhn-see-vuh-buhl] / ˌɪn kənˈsi və bəl /

ADJECTIVE

beyond reason, belief

Synonyms

STRONGEST

extraordinary implausible impossible improbable incredible mind-boggling strange unbelievable unheard-of unimaginable unthinkable

WEAK

fantastic incogitable incomprehensible insupposable phony rare reachy staggering thin unconvincing unknowable unlikely unsubstantial weak won't fly won't wash

Antonyms

STRONGEST

believable common credible familiar likely normal plausible possible reasonable tenable usual

WEAK

conceivable fathomable imaginable

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.

“Admittedly, it’s not inconceivable that retail interest in gold and other precious metals could explode once again,” Oxley said.

From Barron's • Jun. 12, 2026

For so long, it has felt inconceivable to not have Heather Knight as the first name on the England team sheet.

From BBC • May 28, 2026

“All the ticket prices in this World Cup are inconceivable for previous World Cups,” Kuper said.

From Los Angeles Times • May 23, 2026

Two men broke a previously inconceivable barrier at the London Marathon on Sunday, both running 26.2 miles in under two hours and smashing the world record.

From The Wall Street Journal • Apr. 26, 2026

Some brows creased as rational minds grappled with this proof of the impossible—or at least the hitherto inconceivable.

From "Strange the Dreamer" by Laini Taylor

Vocabulary lists containing inconceivable

The Diary of Anne Frank

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Essential Academic Vocabulary for High School Students, List 2

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List 3

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