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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 position of AI leaders like Amodei is that allowing a time lag in the case of artificial intelligence might leave it too late for regulation to be effective.

From Los Angeles Times ● Oct. 13, 2026

Pepe Di'Iasio, general secretary of the Association of School and College Leaders, said education technology can provide schools with "very effective learning tools".

From BBC ● Oct. 13, 2026

But social media is a very effective channel for consumers to discover new products, and perhaps more importantly for brands, learn new ways to use products.

From The Wall Street Journal ● Oct. 12, 2026

Although the findings do not establish an effective Alzheimer's treatment, they offer a promising tool for guiding future laboratory studies.

From Science Daily ● Oct. 11, 2026

“Yes, very selfish,” continued Amy, in a calm, cool voice, twice as effective just then as an angry one.

From "Little Women" by Louisa May Alcott




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