Synonyms of efficient in English:

efficient


See US English definition of efficient

See UK English definition of efficient

See Spanish definition of eficiente

adjective

1‘efficient managerial techniques’

SYNONYMS
well organized, methodical, systematic, structured, well planned, logical, coherent, well regulated, well run, well ordered, orderly, businesslike, systematized, streamlined, productive, effective, labour-saving, cost-effective, energy-efficient, energy-saving, fuel-efficient
ANTONYMS

inefficient, disorganized

2‘a most efficient young secretary’

SYNONYMS
competent, capable, able, proficient, adept, deft, expert, professional, skilful, skilled, effective, productive, organized, workmanlike, businesslike
rangé
ANTONYMS

inefficient, incompetent