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being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas" businesslike, cost-efficient, economic, expeditious, high-octane, streamlined, underspent able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of competent |
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