Ability Meaning, and the Line Between Ability, Capacity and Skill
Ability is the power to do something, whether you were born with it or learned it. It differs from capacity, which is potential, and from skill, which must be trained.
Ability is the state of being able to do something. It covers both what you can do naturally and what you can do because you practised: *the ability to swim*, *the ability to concentrate*, *the ability to pay*.
English keeps three near-neighbours in play here, and the difference is worth knowing. Capacity is what you could hold or become; ability is what you can do now; skill is ability that has been trained and can be judged.
The main senses
- The power or means to do something. *He has the ability to fix almost anything.*
- A particular talent (often plural). *Her mathematical abilities showed early.*
- Competence at a level. *A mixed-ability class.*
Word forms
| Form | Word | Example |
|---|---|---|
| Noun (singular) | ability | The ability to listen is underrated. |
| Noun (plural) | abilities | Children of different abilities. |
| Adjective | able | She is able to read three languages. |
| Adverb | ably | He ably defended the decision. |
| Opposite | inability / disability | An inability to sleep. |
How it is used in a sentence
- He has the ability to explain hard things simply.Followed by to plus a verb — the standard pattern.
- The company questioned her ability to pay.Common in formal and financial English.
- Students are grouped by ability rather than by age.Ability as a measured level.
- To the best of my ability, I answered every question.A set phrase meaning as well as I could.
Ability, capacity, skill and talent
| Word | What it really means | Example |
|---|---|---|
| Ability | What you can do now | The ability to drive |
| Capacity | What you could take on or become | A capacity for hard work |
| Skill | Ability trained through practice | Negotiating skills |
| Talent | Unusual natural ability | A talent for languages |
| Aptitude | Natural readiness to learn something | An aptitude for numbers |
Where the word comes from
From Old French *ableté*, from Latin *habilitas*, meaning aptitude or fitness, built on *habilis* — easily handled, apt. The same Latin root gave English *able*, *habit* and *rehabilitate*. The spelling with a silent *h* was restored by Latin-minded writers, then dropped again for the noun.
Is it ability to do or ability of doing?
Ability to do. *The ability to concentrate*, not *the ability of concentrating*. The infinitive is the standard pattern in modern English.
What is the difference between ability and capability?
In everyday use they overlap, but capability leans towards what a person or system is equipped to do, often in technical or military contexts: *the capability to launch satellites*.
Is disability the opposite of ability?
Grammatically it is formed that way, but in use it is a specific term for a physical or mental condition affecting daily activity. The plain opposite of ability is inability.