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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.

The earnings upgrade is partly offset by higher capital expenditure and an elevated 39.1% effective tax rate, the analyst adds.

From The Wall Street Journal • Jun. 11, 2026

The researchers note that phosphatidylcholine supplementation remained effective even when introduced during middle or advanced age.

From Science Daily • Jun. 11, 2026

Alessandra Bielli, from the Centre for Environment, Fisheries and Aquaculture Science, has been leading a trial since 2019 exploring whether pingers are an effective long-term deterrent when used closer to shore.

From BBC • Jun. 10, 2026

And unlike many wealthy self-funders, Steyer did not leap into a campaign as a political neophyte who assumed their business skills would translate into being an effective elected official.

From Los Angeles Times • Jun. 10, 2026

“Or it’s not effective on egglets,” Jordie puts in.

From "Linked" by Gordon Korman




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