adjective
possessed of or marked by a high level of efficiency and ability
an able student always near the head of his class
Synonyms: au fait, capable, competent, good, proper, qualified, wicked
Related Word: effective, effectual, efficient; expert, proficient, skilled, skillful; alert, clever, keen, sharp; brainy, brilliant, intelligent, smart; enterprising, go-ahead, up-and-coming
Contrasted words: ineffective, ineffectual, inefficient; incapable, incompetent, unqualified; fair, indifferent, mediocre; lackluster, maladroit
Antonyms: inept; unable