1) Failure 2) French word used in English 3) Helplessness 4) Inaptitude 5) Incapableness 6) Incapacity 7) Lack of ability 8) Powerlessness Found on https://www.crosswordclues.com/clue/incapability
In·ca`pa·bil'i·ty noun 1. The quality of being incapable; incapacity. Suckling. 2. (Law) Want of legal qualifications, or of legal power; as, incapability of holding an office. Found on http://www.encyclo.co.uk/webster/I/29