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effective

Pronunciation: /ɪˈfɛktɪv/

The English word “effective” has 8 meanings listed here.

adjective

  1. Having the power to produce a required effect or effects.
  2. Producing a decided or decisive effect.
  3. Efficient, serviceable, or operative, available for useful work.
  4. Actually in effect.
  5. Having no negative coefficients.
  6. Such that no group element acts trivially.
  7. approximate; Not describing the fundamental dynamic changes in some system as they happen.

noun

  1. a soldier fit for duty

Etymology

From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“to make; to bring about”), equivalent to effect + -ive.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.