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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.

“Other than communications and rate hikes, I don’t see effective tightening options at this time,” says Darrell Duffie, professor of management and Finance at the Graduate School of Business, at Stanford University.

From Barron's • Jun. 29, 2026

His three goals here have taken his international tally to nine in 12 matches—though even that undersells how effective he is since he has spent most of those on the bench.

From The Wall Street Journal • Jun. 29, 2026

Based on earlier research, Yassine and his colleagues suspect that omega-3s may be more effective when consumed as part of an overall Mediterranean-style eating pattern rather than as a standalone supplement.

From Science Daily • Jun. 29, 2026

One of the most effective ways of locating victims is "by having a really good listen", Ivory says.

From BBC • Jun. 29, 2026

These were all effective tactics and without question advanced the cause of the suffragists in their campaign to win the ballot.

From "1919 The Year That Changed America" by Martin W. Sandler




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