effective

Meanings

Adjective

• Having the power to produce a required effect or effects.
• Producing a decided or decisive effect.
• Efficient, serviceable, or operative, available for useful work.
• Actually in effect.
• Having no negative coefficients.
• approximate; Not describing the fundamental dynamic changes in some system as they happen.

Noun

• a soldier fit for duty

Origin

• From French effectif, from Latin effectīvus, from efficiō.