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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.

And he thinks A.I. can be harnessed to make government more efficient and effective for constituents.

From Slate • Jun. 2, 2026

“Consequently, there is an urgent need for more effective treatment approaches that provide durable benefit for a greater number of patients.”

From MarketWatch • Jun. 1, 2026

Critics have yet to give their verdict on the latest film and how effective it is at tackling the issue of children's relationship with technology.

From BBC • Jun. 1, 2026

"To ensure the safety and well-being of all residents, a mandatory curfew for a half-mile area surrounding Delaney Hall is being implemented, effective immediately," Newark Mayor Ras Baraka said in a statement.

From Barron's • May 31, 2026

That seemed the most effective way to overthrow segregationist Jim Crow laws.

From "Because They Marched" by Russell Freedman




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