incapable of being conceived, imagined, or considered
unconceivable in American English
(ˌunkənˈsivəbəl)
adjective
archaic
inconceivable
Derived forms
unconceivableness
noun
unconceivably
adverb
Word origin
[1605–15; un-1 + conceivable]This word is first recorded in the period 1605–15. Other words that entered Englishat around the same time include: crater, ideal, package, surface, turnoverun- is a prefix meaning “not,” freely used as an English formative, giving negative oropposite force in adjectives and their derivative adverbs and nouns (unfair; unfairly; unfairness; unfelt; unseen; unfitting; unformed; unheard-of; un-get-at-able), and less freely used in certain other nouns (unrest; unemployment)
Examples of 'unconceivable' in a sentence
unconceivable
They have 27 points, which is still not enough to stay up yet it's unconceivable they would go down.