- efficient
- adj1. efficacious, effectual, effective, effecting, valid, active, operative, operant; causative, productive, producing, generative, generating, assembly line; potent, powerful, high-powered, puissant, energetic, vigorous, dynamic.2. competent, fit, fitted, Sl. on the ball, qualified, eligible, prepared, well-grounded, trained, ready; capable, commensurate, equal to, Inf. up to; expert, masterful, masterly, Inf. crack, Sl. crackerjack, Inf. whiz-bang, Brit. Sl. whizzo; proficient, adept, accomplished, polished, practiced, experienced, Fr. au fait; clever, adroit, slick, deft, skillful, talented, dexterous.3. economical, thrifty, saving.
A Note on the Style of the synonym finder. 2014.