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Effective

//ɪˈfɛktɪv// adj, noun

Adjective

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.

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6
Such that no group element acts trivially.
7
approximate; Not describing the fundamental dynamic changes in some system as they happen.

Adjective

1
existing in fact; not theoretical; real wordnet
2
able to accomplish a purpose; functioning effectively wordnet
3
exerting force or influence wordnet
4
producing or capable of producing an intended result or having a striking effect wordnet
5
works well as a means or remedy wordnet

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Noun

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."

Etymology 1

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

Etymology 2

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

Unscramble this word: effective