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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.

In a website statement, WellBN said it recognised "the seriousness and sensitivity of the matters raised" and that its priority remained providing "compassionate, safe and effective care for all patients".

From BBC • Jun. 11, 2026

It’s most effective if your medical provider helps with the process, says Julie Carter, counsel for federal policy at the Medicare Rights Center, an advocacy group.

From Barron's • 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

One of the most effective ways to reduce the risk of hearing damage is to limit exposure to loud noise.

From Science Daily • Jun. 10, 2026

Reshevsky, though, tended to be underprepared and often had to determine the most effective moves during play, wasting valuable time.

From "Endgame" by Frank Brady




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