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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.

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"There's just not enough clinical data to say whether these peptides are safe and effective," said Alexander Weber, an orthopedic surgeon and chief of sports medicine at the University of Southern California.

From Barron's Jul. 23, 2026

If passed, it would become effective after Dec. 31, 2033.

From MarketWatch Jul. 22, 2026

It will require years of steady and effective governance.

From The Wall Street Journal Jul. 22, 2026

While sceptics have questioned the law's viability, the government has insisted the online tools to put the age checks in place are effective and safe.

From BBC Jul. 22, 2026

This method was particularly effective in the case of the dragon of Lambton Hall.

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville




Vocabulary lists containing effective


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