inconceivable
/ɪn.kənˈsiː.və.bl̩/ adjective
- adjective Unable to be conceived or imagined; unbelievable.
Synonyms
unconceivable unthinkable impossible out of the question unimaginable
Antonyms
Etymology
From in- + conceivable.
Webster’s 1913
- adjective 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.
Etymology [Pref. in- not + conceivable: cf. F. inconcevable.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “inconceivable”, CC BY-SA 4.0. Details