Not capable.Lacking sufficient capacity or capaciousness; insufficient, unfit, or unqualified: in this and the succeeding uses commonly followed by of.Not capable of receiving or admitting; not susceptible: as, his lot is incapable of amelioration.Not capable of understanding or comprehending; wanting appreciation; unconscious.Not capable legally; unqualified; disqualified by law; wanting legal warrant or capacity.Synonyms Incapable, Unable. Incapable properly denotes a want of passive power, the power of receiving, and is applicable particularly to the mind, or said of something inanimate: as, a body once dead is incapable of restoration to life. The word often applies to moral inability: as, he is quite incapable of doing a thing so base; or otherwise it approaches essentially the more active meanings of unable. Unable denotes the want of active power or power of performing, being applicable to the body or to the mind: we could not say that Achilles was unable to be wounded, but we could say that Achilles was incapable of a wound. In law capable and incapable refer more frequently to legal qualification, able and unable to physical facility or hindrance: as, a man may not be legally incapable of doing an act, yet from circumstances be practically unable to do it.n. One who lacks mental or physical capacity, either general or special.