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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.

And he thinks A.I. can be harnessed to make government more efficient and effective for constituents.

From Slate • Jun. 2, 2026

Avis Budget Group terminated its toll collection contract with Verra Mobility, effective September, impacting 13.5% of last year’s revenue.

From Barron's • Jun. 1, 2026

There’s no legitimate reason for Riyadh to dodge those restrictions or the most effective method of inspections.

From The Wall Street Journal • May 31, 2026

For example, if artificial intelligence is so effective at increasing productivity that it leads to widespread AI-related layoffs, that could raise the unemployment rate, reduce consumer spending and spook investors.

From MarketWatch • May 31, 2026

As head of the SIS and Yardley’s effective successor, William was closely watched.

From "The Woman All Spies Fear" by Amy Butler Greenfield




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