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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.

"This is alongside researching the most effective way to enable community-led housing groups to access cash more easily," he said.

From BBC • Jun. 5, 2026

The authorization is effective for three years and replaces a previous authorization from March 2019.

From The Wall Street Journal • Jun. 2, 2026

CAR T cells lacking the protein were more effective at controlling tumors and helped extend survival.

From Science Daily • Jun. 2, 2026

According to FactSet, the Bloomberg High Yield Index has a yield-to-worst of 7.01%, while the Bloomberg Aggregate Index has a yield-to-worst of 4.70% and an effective duration of 5.97.

From MarketWatch • Jun. 2, 2026

Before he could influence global policy, however, he knew he’d have to demonstrate his approach to effective public health care in the central plateau.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




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