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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:

Will it prove safe and effective enough for patients to take the risk?

From The Wall Street Journal Sep. 16, 2026

But analysts are not yet convinced that is going to be fully effective.

From BBC Sep. 15, 2026

“It is the leading edge of a system that lacks accountability, effective monitoring, and prioritizes inputs rather than outcomes.”

From Los Angeles Times Sep. 15, 2026

Hydrotherapy, which involves exercises or treatments performed in warm water, was especially effective for reducing pain.

From Science Daily Sep. 15, 2026

It’s a very effective image, I’ll admit to you.

From "The Many Assassinations of Samir, the Seller of Dreams" by Daniel Nayeri




Vocabulary lists containing effective


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