The difference between Effective and Futile
When used as adjectives, effective means having the power to produce a required effect or effects, whereas futile means incapable of producing results.
Effective is also noun with the meaning: a soldier fit for duty.
check bellow for the other definitions of Effective and Futile
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Effective as an adjective:
Having the power to produce a required effect or effects.
Examples:
"synonyms: efficacious"
"The pill is an effective method of birth control."
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Effective as an adjective:
Producing a decided or decisive effect.
Examples:
"The president delivered an effective speech!"
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Effective as an adjective:
Efficient, serviceable, or operative, available for useful work.
Examples:
"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."
"The effective voltage of an alternating current is 0.7 times its peak voltage."
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Effective as an adjective:
Actually in effect.
Examples:
"The curfew is effective at midnight."
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Effective as an adjective (geometry, of a cycle or divisor):
Having no negative coefficients.
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Effective as a noun (military):
A soldier fit for duty.
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Futile as an adjective:
Incapable of producing results; doomed not to be successful; not worth attempting.
Examples:
"synonyms: useless"