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.

The pundits thought it was inconceivable when Donald Trump announced his run for the presidency in 2015.

From Los Angeles Times • May 18, 2026

Vargas has been one of the best players in the sport this season, hitting .331 with a .915 on-base-plus-slugging percentage entering Friday, numbers that were previously inconceivable for him.

From The Wall Street Journal • May 15, 2026

It is not inconceivable Rew, Gay and McKinney all line up against the Proteas second string.

From BBC • Apr. 28, 2026

Paramount has set a closing target date of Sept. 30, although the deal faces several regulatory hurdles, so it is not inconceivable that it will get pushed past that date.

From MarketWatch • Mar. 17, 2026

I was able to see them with an objectivity that was inconceivable to them.

From "Black Boy" by Richard Wright

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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