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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.

Shankland ran everywhere apart from where he is most effective.

From BBC • May 30, 2026

More research and clinical trials will be needed before scientists know whether CBD could become a safe and effective treatment for people with Alzheimer's disease.

From Science Daily • May 29, 2026

A more effective expression of the idea is found in Bloom’s “Take Arms Against a Sea of Troubles,” published shortly after his death.

From The Wall Street Journal • May 29, 2026

Smaller AI models from Mistral could be built into weapons systems or other defence equipment, such as drones, that can be more effective if able to act autonomously.

From Barron's • May 28, 2026

Besides, it turned out that they also were incredibly effective fundraising tools.

From "Night Owls" by A.R. Vishny




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