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Effective vs Effectiveness - What's the difference?

effective | effectiveness |

Effectiveness is a related term of effective.



As nouns the difference between effective and effectiveness

is that effective is a soldier fit for duty while effectiveness is the property of being effective, of achieving results.

As an adjective effective

is having the power to produce a required effect or effects.

effective

English

Adjective

(en adjective)
  • Having the power to produce a required effect or effects.
    • The pill is an effective method of birth control.
  • Producing a decided or decisive effect.
    • The president delivered an effective speech!
  • * Jeremy Taylor
    • Whosoever is an effective , real cause of doing his neighbour wrong, is criminal.
  • Efficient, serviceable, or operative, available for useful work.
    • How long does it take to make a bunch of civilians an effective military force?
    My effective income after taxes and child support is $500 a month.
    The effective radiated power is determined by multiplying the transmitter power output with the antenna gain.
    The effective voltage of an alternating current is 0.7 times its peak voltage.
  • Actually in effect.
    • The curfew is effective at midnight.
  • Having no negative coefficients.

    • Related terms

    * effect * effectivity * effectual * efficacious * efficacity * efficacy * efficiency * efficient

    Noun

    (en noun)
  • (military) A soldier fit for duty.
  • *1876 , , Recollections of the Elkhorn Campaign :
  • *:The Army of the West reached Corinth sometime after the battle of Shiloh. We were 15,000 effectives , and brought Beauregard's effective force up to 45,000 men.
    • ----

    effectiveness

    English

    (wikipedia effectiveness)

    Noun

    (-)
  • The property of being effective, of achieving results.
    • The effectiveness of the drug was well established.
  • The capacity or potential for achieving results.
  • *
  • The degree to which something achieves results.
    • He questioned the effectiveness of the treatment.
  • * 2013 , Phil McNulty, "[http://www.bbc.co.uk/sport/0/football/23830980]", BBC Sport , 1 September 2013:
    • United were having more possession but a sign of the effectiveness of Liverpool's defence was that it took the visitors 76 minutes to force Mignolet into serious action, when he dived to punch away a shot from substitute Nani.

    Related terms

    * effect * effective * effectivity * effector * effectual * effectuate * efficacious * efficacity * efficacy * efficiency * efficient