Adjective

(en adjective)

That cannot be conceived; unimaginable; inconceivable.

*{{quote-book, year=1880, author=Charles Dickens, title=The Letters of Charles Dickens, chapter=, edition= citation

, passage=I am now going out in a sleigh (and four) with unconceivable dignity and grandeur; mentioning which reminds me that I am informed by trusty scouts that ---- intends to waylay me at Washington, and may even descend upon me in the train to-morrow. }}

*{{quote-book, year=1903, author=Jonathan Swift, title=The Prose Works of Jonathan Swift, Vol. VI; The Drapier's Letters, chapter=, edition= citation

, passage=The kind liberty granted us of wearing Indian stuffs, and calicoes, to gratify the vanity and folly of our women; which, beside the profit to England, is an unconceivable loss to us; forcing the weavers to beg in our streets, or transport themselves to foreign countries. }}

Adjective

(en adjective)

unable to be conceived, unbelievable