1. Lack of ability or capacity: inability, incapacity, incompetence, incompetency, powerlessness.

What is incapability?

Definitions of incapability. the quality of not being capable -- physically or intellectually or legally. synonyms: incapableness. Antonyms: capability, capableness. the quality of being capable -- physically or intellectually or legally.

What does incapable mean?

1 : lacking capacity, ability, or qualification for the purpose or end in view: such as. a : not able or fit for the doing or performance : incompetent. b : not being in a state or of a kind to admit : insusceptible.