[in.con.ceiv.able] adj (ca. 1631): not conceivable: as a: impossible to comprehend b: unbelievable -- in.con.ceiv.abil.i.ty n -- in.con.ceiv.able.ness n -- in.con.ceiv.ably adv
INCONCEIVABLE
Meaning of INCONCEIVABLE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012