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

But even getting to the point of a plea deal would have seemed inconceivable if not for what happened last week. —Erik Ortiz, NBC News, 2 Nov. 2024

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

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