- The definition of effective is something that is able to achieve a desired outcome or end result.
An example of effective is a good solid argument that lets you convince others of your point.
- having an effect; producing a result
- producing a definite or desired result; efficient
- in effect; operative; active
- actual, not merely potential or theoretical
- making a striking impression; impressive
- equipped and ready for combat
Origin of effectiveMiddle English and amp; Old French effectif ; from Classical Latin effectivus
- a. Having an intended or expected effect.b. Producing a strong impression or response; striking: gave an effective performance as Othello.
- Operative; in effect: The law is effective immediately.
- Existing in fact; actual: a decline in the effective demand.
- Prepared for use or action, especially in combat.
- ef·fec′tive·ness, ef′fec·tiv′i·ty
(comparative more effective, superlative most effective)
- 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!
- 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.
- (military) A soldier fit for duty.
France:effectif (late 14c)＜ Latin: effectus ＜ efficiō ("productive, effective")