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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.

Should daraxonrasib succeed, it could help set the stage for more precise, personalized and effective treatments for pancreatic cancer in the years to come.

From Science Daily • Jun. 4, 2026

“There’s no effective way for them to compete with a terrestrial network,” he said.

From MarketWatch • Jun. 3, 2026

The company raised its dividend payout ratio to 50%-70% of net profit from 30%-50% previously, effective immediately, the analysts note.

From The Wall Street Journal • Jun. 2, 2026

The government says the trial will help build a more effective screening system for the disease for the future.

From BBC • Jun. 2, 2026

Jupiter was very effective when he once roused himself.

From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton




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