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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

“I used it last year to pursue a $20k annual raise. Pretty effective in my case,” another Reddit user posted.

From MarketWatch • Jun. 2, 2026

The official said this would create space for gradual de-escalation and an effective cessation of hostilities.

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

While the official center of the government remained in the executive and congressional offices at Philadelphia, the truly effective centers of power were located in two political partnerships based on personal trust.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis




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