Adjective:
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"
2: able, capable, competent 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"
3: able, capable 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"
4: fit, able, able-bodied, healthy having a strong healthy body; "an able seaman"; "every able-bodied young man served in the army"