Conceivable :: Conceivable (a.) Capable of being conceived, imagined, or understood..
Inconceivability :: Inconceivability (n.) The quality of being inconceivable; inconceivableness.
Inconceivable :: Inconceivable (a.) 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..