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Definition efficient

Etymology

1398, �making,� from Old French, from Latin efficientem, nominative effici?ns, participle of efficere (�work out, accomplish�) (see effect). Meaning �productive, skilled� is from 1787. Efficiency apartment is first recorded 1930, American English.

Adjective

efficient (comparative more efficient, superlative most efficient)

1. making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy
2. expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input
3. causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent)
4. (proscribed, old use) effective

Noun

efficient (plural efficients)

1. (obsolete) a cause; something that causes an effect

Results 78 Words with the letters EFFICIENT

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