effic

Usage

• efficacy

  Efficacy is the ability or power to produce an expected effect or result.

• coefficient

  a constant number that serves as a measure of some property or characteristic

• efficacious

  marked by qualities giving the power to produce an intended effect

• efficiency

  the ratio of the output to the input of any system

• efficient

  being effective without wasting time or effort or expense

• inefficiency

  unskillfulness resulting from a lack of efficiency

• inefficiently

  in an inefficient manner