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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.

Replacing Balogun won’t be easy since he’s emerged as one of the team’s most effective and creative players, either scoring of setting up the go-ahead goal in all three of the U.S. wins.

From Los Angeles Times • Jul. 3, 2026

"This level of rare and long-duration heat, with little or no overnight relief, affects anyone without effective cooling and/or adequate hydration," the National Weather Service said in a warning.

From BBC • Jul. 2, 2026

"The contradictions in the literature were largely because scientists were comparing systems at different effective pressures or densities without realizing it."

From Science Daily • Jul. 2, 2026

"This level of rare and long-duration heat, with little or no overnight relief, affects anyone without effective cooling and/or adequate hydration," warned the National Weather Service.

From Barron's • Jul. 2, 2026

In doing so, she helped weave those agencies into a more effective fighting force.

From "The Woman All Spies Fear" by Amy Butler Greenfield




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