effective

名词 n. 形容词 adj.
中文释义
美 /əˈfektɪv/

英文释义

名词 n.
  1. a soldier fit for duty
    — 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.
形容词 adj.
  1. Having the power to produce a required effect or effects.
    — The pill is an effective method of birth control.
  2. Producing a decided or decisive effect.
    — The president delivered an effective speech!
  3. Efficient, serviceable, or operative, available for useful work.
    — How long does it take to make a bunch of civilians an effective military force?
  4. Actually in effect.
    — effective immediately
  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.

词形变化

more effective comparative most effective superlative eff. alternative effectives plural eff. alternative

词汇关系

衍生词
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
相关词
effect effectivity effectual efficacious efficacity efficacy efficiency efficient pseudoeffective

词源

词源 1
Etymology tree
Proto-Indo-European *h₁éǵʰ
Proto-Indo-European *-s
Proto-Indo-European *h₁éǵʰs
Proto-Italic *eks
Latin ex
Latin ef-
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 effectivusbor.
French effectifder.
English effective
From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“to make; to bring about”), equivalent to effect + -ive.
词源 2
Etymology tree
Proto-Indo-European *h₁éǵʰ
Proto-Indo-European *-s
Proto-Indo-European *h₁éǵʰs
Proto-Italic *eks
Latin ex
Latin ef-
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 effectivusbor.
French effectifder.
English effective
From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“to make; to bring about”), equivalent to effect + -ive.
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