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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.

Succeeding him, effective immediately, is Takis Georgakopoulos, who has been with the company since late 2024 and most recently served as a co-president focused on technology and merchant solutions.

From MarketWatch • Jun. 15, 2026

It’s just that it needs more direct attention from the media, and then I think the activist community that works on these issues hasn’t been very effective.

From Salon • Jun. 15, 2026

“JPY’s weakness, as measured by the real effective exchange rate, is becoming pronounced and warrants repeated FX interventions even as volatility in the JPY has been limited,” they say.

From The Wall Street Journal • Jun. 15, 2026

In healthy soils, these fungal networks can expand the effective foraging area of plant roots by up to 100 times and provide > 80 percent of a plant's phosphorous needs.

From Science Daily • Jun. 15, 2026

Farmer strongly believed that quarantines were not an effective strategy for handling AIDS, but the Cuban approach had been far more humane.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




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