- inability - lack of ability (especially mental ability) to do something
--1 is a kind of cognition, knowledge, noesis
Antonyms: ability, power
--1 has particulars:block, mental block; stupidity; inaptitude; incapacity; unskillfulness; illiteracy, analphabetism; uncreativeness; incomprehension - inability, unfitness - lacking the power to perform
--2 is a kind of quality
Antonyms: ability
--2 has particulars:unadaptability; insensitivity, insensitiveness; incompetence, incompetency; incapability, incapableness; insufficiency