Near Antonyms
efficient
Definition
- : productive of desired effectsespecially : capable of producing desired results with little or no waste (as of time or materials) //an efficient worker //efficient machinery
- : being or involving the immediate agent in producing an effect //the efficient action of heat in changing water to steam
— see also cost-efficient
Other Words
- efficiently adverb //working/operating efficiently
Synonyms & Antonyms
Synonyms
effective effectual efficacious fruitful operative potent productiveAntonyms
fruitless ineffective ineffectual inefficient inoperative unfruitful unproductive uselessExamples
- //that manual lawn mower is not a very efficient tool for doing a huge yard
First Known Use
14th century, in the meaning defined at sense 2History and Etymology
Middle English, "active, immediate (of a cause)," borrowed from Middle French & Latin; Middle French, borrowed from Latin efficient-, efficiens "producing or giving rise to something, immediate (of a cause), active," from present participle of efficere "to make, bring about, produce, carry out" — more at effect entry 1efficient
adjective
Synonyms & Antonyms
- producing or capable of producing a desired result //that manual lawn mower is not a very efficient tool for doing a huge yardRelated WordsNear Antonyms
efficient
Definition
- : productive of desired effectsespecially : capable of producing desired results with little or no waste (as of time or materials) //an efficient worker //efficient machinery
- : being or involving the immediate agent in producing an effect //the efficient action of heat in changing water to steam
— see also cost-efficient
Other Words
- efficiently adverb //working/operating efficiently
Synonyms & Antonyms
Synonyms
effective effectual efficacious fruitful operative potent productiveAntonyms
fruitless ineffective ineffectual inefficient inoperative unfruitful unproductive uselessExamples
- //that manual lawn mower is not a very efficient tool for doing a huge yard
First Known Use
14th century, in the meaning defined at sense 2History and Etymology
Middle English, "active, immediate (of a cause)," borrowed from Middle French & Latin; Middle French, borrowed from Latin efficient-, efficiens "producing or giving rise to something, immediate (of a cause), active," from present participle of efficere "to make, bring about, produce, carry out" — more at effect entry 1efficient
adjective
Synonyms & Antonyms
- producing or capable of producing a desired result //that manual lawn mower is not a very efficient tool for doing a huge yard