Efficient meaning

What does “efficient” mean? Definitions, examples, synonyms and opposites.

“efficient” is an adjective with 2 meanings. Its most common meaning is: being effective without wasting time or effort or expense.

efficient

being effective without wasting time or effort or expense
“an efficient production manager”
“efficient engines save gas”
Oppositesinefficient
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...”
“effective personnel”
Synonymseffective

Source: WordNet 3.1, Princeton University