'Efficient' definitions:

Definition of 'efficient'

From: WordNet
adjective
Being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas" [ant: inefficient]
adjective
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 the revolution" [syn: effective, efficient]

Definition of 'Efficient'

From: GCIDE
  • Efficient \Ef*fi"cient\, n. An efficient cause; a prime mover. [1913 Webster]
  • God . . . moveth mere natural agents as an efficient only. --Hooker. [1913 Webster]

Definition of 'efficient'

From: GCIDE
  • efficient \ef*fi"cient\ ([e^]f*f[i^]sh"ent), a. [L. efficiens, -entis, p. pr. of efficere to effect: cf. F. efficient. See Effect, n.] Causing effects; producing results; that makes the effect to be what it is; actively operative; not inactive, slack, or incapable; characterized by energetic and useful activity; as, an efficient officer, power. [1913 Webster]
  • The efficient cause is the working cause. --Wilson.
  • Syn: Effective; effectual; competent; able; capable; material; potent. [1913 Webster]