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adj. a•bler, a•blest.
Able and capable are both used to say that someone can do something.
If someone is able to do something, they can do it either because of their knowledge or skill, or because it is possible.
If you use a past tense, you mean that someone has actually done something.
If someone is capable of doing something, they have the knowledge and skill to do it.
You can say that someone is capable of a particular feeling or action.
You can also use capable of when you are talking about what something such as a car or machine can do.
If you describe someone as able or capable, you mean that they do things well.
|Adj.||1.||able - (usually followed by `to') having the necessary means or skill or know-how or authority to do something; "able to swim"; "she was able to program her computer"; "we were at last able to buy a car"; "able to get a grant for the project"|
unable - (usually followed by `to') not having the necessary means or skill or know-how; "unable to get to town without a car"; "unable to obtain funds"
|2.||able - have the skills and qualifications to do things well; "able teachers"; "a capable administrator"; "children as young as 14 can be extremely capable and dependable"|
competent - properly or sufficiently qualified or capable or efficient; "a competent typist"
|3.||able - having inherent physical or mental ability or capacity; "able to learn"; "human beings are able to walk on two feet"; "Superman is able to leap tall buildings"|
capable - (usually followed by `of') having capacity or ability; "capable of winning"; "capable of hard work"; "capable of walking on two feet"
|4.||able - having a strong healthy body; "an able seaman"; "every able-bodied young man served in the army"|
fit - physically and mentally sound or healthy; "felt relaxed and fit after their holiday"; "keeps fit with diet and exercise"
capable weak, inadequate, incapable, incompetent, unfit, ineffective, inefficient, mediocre, inept, amateurish, no great shakes (informal), unskilful
the child isn't able to walk (yet) → el niño no sabe andar (todavía)
he's not able to walk → no puede andar
come as soon as you are able → ven en cuanto puedas
I was eventually able to escape → por fin pude escaparme, por fin logré escaparme
able to pay → solvente
Alternatives to "poder"
It would be nice to be able to afford to retire early → Ce serait agréable de pouvoir se permettre de prendre sa retraite plus tôt.
This frog is able to jump three metres → Cette grenouille est capable de faire des bonds de trois mètres.
He is able to read and write → Il sait lire et écrire.
able[ˈeɪbl] adj (person) → capace, bravo/a; (piece of work) → abile, intelligente
to be able to do sth → poter fare qc, essere in grado di fare qc
he's not able to walk → non può or non è in grado di or non è in condizione di camminare
those who are able to pay → coloro che sono in condizione or che possono permettersi di pagare