English Explanatory Dictionary

effective

English dictionary entry

Meanings

adj
  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

Pronunciation

/ɪˈfɛktɪv/ en-us-effective.ogg /əˈfɛktɪv/ /əˈfektɪv/

Word forms

effective more effective most effective eff. effectives

Etymology

Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ef- Proto-Indo-European *dʰeh₁- Proto-Indo-European *dʰeh₁k- Proto-Indo-European *-yéti Proto-Indo-European *dʰh₁kyéti Proto-Italic *θakjō Proto-Italic *fakjō Latin faciō Latin efficiō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Latin effectīvusbor. French effectifder. English effective From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“to make; to bring about”), equivalent to effect + -ive.

Synonyms

efficacious telling

Antonyms

nominal

Related words

effect effectivity effectual efficacious efficacity efficacy efficiency efficient pseudoeffective

Derived words

bioeffective brake mean effective pressure coeffective cost-effective effectivate effective accelerationism effective accelerationist effective altruism effective altruist effective compression effective dose effective energy effectively effectiveness effective nuclear charge effective radiated power effective stack size effectivization effectivize Effie equieffective geoeffective ineffective isoeffective median effective time noneffective subeffective supereffective undereffective uneffective
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