1. [ adjective ] being effective without wasting time or effort or expense

"an efficient production manager" "efficient engines save gas"

Related terms: inefficient economic streamlined expeditious businesslike cost-effective underspent high-octane effective competent
2. [ adjective ] able to accomplish a purpose; functioning effectively
Synonyms: effective

"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"

Related terms: competent
Similar spelling:   efficiently