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effective

adj
/ɪˈfɛktɪv/

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.

  1. derived from effectīvus — “productive; effective”
  2. derived from effectif

Definitions

  1. Having the power to produce a required effect or effects.

    • The pill is an effective method of birth control.
    • "Capital idea; we'll go together and complain: two will be more effective," suggested Mr. Belting.
    • Fire ants circumvented the problem of an ineffective sting by having an unusual and highly effective venom that when daubed or sprayed on other ants penetrates their waxy protective integumental barrier and kills or disables them.

  2. Producing a decided or decisive effect.

    • The president delivered an effective speech!
    • Whosoever is an effective, real cause of doing his neighbour wrong, is criminal.

  3. 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.
  4. ›+ 5 more definitions

    1. Actually in effect.

      • effective immediately
      • The curfew is effective at midnight.

    2. Having no negative coefficients.

    3. Such that no group element acts trivially.

    4. approximate

      approximate; Not describing the fundamental dynamic changes in some system as they happen.

    5. 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.

The neighborhood

Derived

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

Vish — recursive loop

A definitional loop anchored at effective. Each word in the ring is defined by the next; follow the chain far enough and it folds back on itself. Scroll to it and watch.

01effective02operative03force04push05continually06continuous07articulated08articulate

A definitional loop anchored at effective. Each word in the ring appears in the definition of the next; follow the chain far enough and it folds back on itself.

8 hops · closes at effective

curated · pre-corpus. live cycle detection across the full graph is the next major milestone.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA