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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.

Nike appoints David Denton, formerly of Pfizer and CVS Health, as its new chief financial officer, effective Aug. 17.

From Barron's • Jun. 24, 2026

The watchdog said the current pace and scale of action would not deliver the change that was needed for the plan to be effective.

From BBC • Jun. 24, 2026

The termination is expected to become effective July 22.

From Los Angeles Times • Jun. 24, 2026

Without getting too wonky about the mechanics of privacy laws, the most effective thing they could do is to impose accountability.

From The Wall Street Journal • Jun. 23, 2026

As more effective procedures were developed, surgery and wound treatment became safer.

From "Ambushed!" by Gail Jarrow




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