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

From Science Daily • Jun. 11, 2026

In Mexico, where microfinance lenders have come under fire for charging effective annual interest rates above 400%, a popular lender, Consejo de Asistencia al Microemprendedor, went into liquidation last year.

From The Wall Street Journal • Jun. 11, 2026

But the 24-year-old, a finalist at Queen's last year, showed why she is so effective on grass with a commanding 6-1 6-3 win over world number 44 Siegemund.

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

John Kikulski was particularly effective, speaking in Polish and Lithuanian to capture the hearts of the eastern European workers.

From "A Few Red Drops: The Chicago Race Riot of 1919" by Claire Hartfield




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