Definition of inconceivable :
Not conceivable; incapable of being conceived by the mind; not explicable by the human intellect, or by any known principles or agencies; incomprehensible; as, it is inconceivable to us how the will acts in producing muscular motion.
unimaginable, unbelievable, unconceivable, shaky, likely, unacceptable, belief, insufferable, out of the question, unthinkable, unsubstantial, improbable, flimsy, unsufferable, weak, thin, unconvincing, incredible
impossible (part of speech: adjective)
- But all the same," he broke off, his eyes burning in his head, " all the same, to me it is inconceivable that any man, however sunk, could have been cruel to her!
- But that Gifford could have, apart from what Edith Morriston might have told him, any intimate knowledge of the tragedy was inconceivable. - "The Hunt Ball Mystery", Magnay, William.
- Is it a mere word, which presents no meaning as corresponding to any objective reality, or has the word a meaning notwithstanding its being an inconceivable one? - "A Candid Examination of Theism", George John Romanes.