Definition
Ability is the power to actually do something — from the Latin habilitas, 'fitness, aptness'. It is the present, working skill itself: a child's ability to read, a team's ability to deliver, a material's ability to bend without snapping. The word looks to performance, to what gets done, rather than to the most that could be done at the outer limit — that is capacity. Someone adept at a task plainly has ability; whether they can also achieve it at scale is a separate question.
Examples
- Her ability to stay calm under pressure made her a natural leader.
- The new engine has the ability to switch fuels without stopping.
- Reading widely will expand a student's ability to argue a case.
Collocations
the ability to·natural ability·a proven ability·ability to cope·demonstrate ability
Synonyms
skill·capability·aptitude·competence·capacity
Antonyms
inability·incompetence
See also
- ability vs capacitysynonyms
Word family
able (adjective)·ably (adverb)·enable (verb)
In TOEFL & IELTS
One of the highest-frequency academic nouns, almost always followed by 'to' + verb ('the ability to adapt'). In Writing it is a precise upgrade from 'can'. Watch the overlap with capacity: ability is the skill to do something now, while capacity is the maximum amount possible. The adjective is able; the verb enable ('technology enables...') is very common in academic prose.