WordReference Random House Learner's Dictionary of American English © 2026
in•a•bil•i•ty /ˌɪnəˈbɪlɪti/USA pronunciation
n.
WordReference Random House Unabridged Dictionary of American English © 2026- lack of ability: [uncountable]failed through obvious inability.[countable* usually singular]an obvious inability to deal with the facts.
in•a•bil•i•ty
(in′ə bil′i tē),USA pronunciation n.
- lack of ability;
lack of power, capacity, or means:his inability to make decisions.
- Medieval Latin inhabilitās. See in-3, ability
- late Middle English inabilite 1400–50
- incapability, incapacity, impotence, incompetence. See disability.