inconceivable

adjective

in·​con·​ceiv·​able ˌin-kən-ˈsē-və-bəl 

: not conceivable: such as

a

: unbelievable

b

: impossible to comprehend

inconceivability

ˌin-kən-ˌsē-və-ˈbi-lə-tē 

noun

inconceivableness

ˌin-kən-ˈsē-və-bəl-nəs 

noun

inconceivably

ˌin-kən-ˈsē-və-blē 

adverb

Synonyms

• fantastic
• fantastical
• implausible
• incredible
• incredulous
• unbelievable
• uncompelling
• unconceivable
• unconvincing
• unimaginable
• unthinkable

Examples of inconceivable in a Sentence

The fire caused an inconceivable amount of damage.

After coming this far, to quit now would be inconceivable.

Recent Examples on the Web

The awesome parts—expelling a new person out of my own body, say—were, quite literally, inconceivable. —Alice Gregory, The New Yorker, 2 Dec. 2024

Former President Donald Trump won the state 56% to 43% on Tuesday, a 13-point win that was inconceivable even to his most die-hard supporters four years ago. —Anthony Man, Sun Sentinel, 10 Nov. 2024

Israel has violated all conceivable and inconceivable international agreements. —Mike Brest, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 11 Oct. 2024

There is the courage to accept uncertainty; to rely on a man who has hurt you; to keep going when the future is inconceivable. —Rafaela Bassili, Vulture, 6 Sep. 2024

Word History

First Known Use

1624, in the meaning defined above

Kids Definition

inconceivable

adjective

in·​con·​ceiv·​able ˌin-kən-ˈsē-və-bəl 

: impossible to imagine or believe

inconceivably

-blē 

adverb