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Definitions

effective

[ih-fek-tiv, ee-fek-] / ɪˈfɛk tɪv, iˈfɛk- /




Usage

What are other ways to say effective? The adjective effective is applied to a person or a thing that has the power to, or which actually does, produce an effect: an effective boss, remedy, speech. Effectual is used especially of that which produces the effect desired or intended, or a decisive result: An effectual bombardment silenced the enemy. Efficacious suggests the capability of achieving a certain end: an efficacious plan, medicine. Efficient (applied also to persons) implies the skillful use of energy or industry to accomplish desired results with little waste of effort: efficient methods; an efficient manager. 

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The greater decrease in nerve size suggested that hydrodissection was more effective at reducing swelling around the compressed nerve.

From Science Daily ● Oct. 22, 2026

"Acquiring weapons is not like ordering at a drive-through. Production, delivery and training all take time before the systems can enter service and become effective."

From Barron's ● Oct. 22, 2026

"If it is difficult to apply the fix patch promptly, temporarily suspending websites and similar measures can be considered an effective way to reduce risk," she said.

From BBC ● Oct. 22, 2026

Bayne, who trains in jiujitsu and Krav Maga self-defense, said extensive jury trial experience has prepared him to be an effective judge.

From Los Angeles Times ● Oct. 21, 2026

They served as a passage between Montaigne’s world, a world of belief and misplaced conviction, and our world, the world of reliable and effective knowledge.

From "The Invention of Science" by David Wootton


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