adj. Function: adjective
Synonyms: EFFECTIVE , effectual, efficacious, virtuous
Related Words: able, capable, competent, fitted, qualified; adept, expert, masterly, proficient, skilled, skillful
Contrasted Words: incapable, incompetent, inexpert, unadept, unproficient, unqualified, unsuitable; unproductive; ineffectual
Antonyms: inefficient