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Efficiently vs Effective - What's the difference?

efficiently | effective |

As an adverb efficiently

is in an efficient manner.

As an adjective effective is

having the power to produce a required effect or effects.

As a noun effective is

(military) a soldier fit for duty.

efficiently

English

Adverb

(en adverb)
  • In an efficient manner.
  • * {{quote-news
    • , year=2011 , date=October 1 , author=Phil Dawkes , title=Sunderland 2 - 2 West Brom , work=BBC Sport citation , page= , passage=The second half was a less open affair, in which West Brom grew increasingly and efficiently conservative.}}

    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.
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