Try Our Apps


Gobble up these 8 terms for eating


[in-kuh n-see-vuh-buh l] /ˌɪn kənˈsi və bəl/
not conceivable; unimaginable; unthinkable.
unbelievable; incredible.
Origin of inconceivable
1625-35; in-3 + conceivable
Related forms
inconceivability, inconceivableness, noun
inconceivably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for inconceivable
Contemporary Examples
Historical Examples
  • This semaphore arm remained rigid for a second, threatening; then it vibrated with inconceivable rapidity, feinting.

  • There is no action of our soul on our body; that would be inconceivable.

  • Horror of an inconceivable monstrosity began to assail me: was I following through the dark an unheard of hideousness?

    Lilith George MacDonald
  • For it was inconceivable that he should now take Rosamund to his hareem.

    The Sea-Hawk Raphael Sabatini
  • What an inconceivable tangle of detritus those streets must be!

    Darkness and Dawn George Allan England
British Dictionary definitions for inconceivable


incapable of being conceived, imagined, or considered
Derived Forms
inconceivability, inconceivableness, noun
inconceivably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for inconceivable

1630s, from in- (1) "not, opposite of" + conceivable. Related: Inconcievably. An Old English word for this was unasmeagendlic.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Word Value for inconceivable

Scrabble Words With Friends