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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.

Karnofsky was the founder of a philanthropy that promoted effective altruism, a movement that was one of the first communities to take the potential power, and danger, of AI seriously.

From The Wall Street Journal

But substantial questions still surround the evidence and call into question whether legislation is an effective cure with no serious side effects.

From The Wall Street Journal

The effective closure of the Strait of Hormuz —a vital maritime choke point—has boosted energy prices.

From Barron's

The effective closure of the Strait of Hormuz —a vital maritime choke point—has boosted energy prices.

From Barron's

The shot was more than 70% effective at preventing the disease in the trial, but not enough people contracted Lyme for the findings to be conclusive.

From The Wall Street Journal