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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.

The Met has argued it needs new technology to remain effective amid staffing cutbacks.

From BBC • May 22, 2026

Had it heeded a more malevolent sensibility than an instinct to overexplain, it might have been more ruthlessly effective at yucking our yum for road trips.

From Los Angeles Times • May 22, 2026

Genetic risk can be detected, but there’s no effective treatment or cure.

From Barron's • May 21, 2026

Eli Lilly’s next-generation weekly weight-loss shot may be more effective than Zepbound or bariatric surgery, which has long been the gold standard for weight loss.

From MarketWatch • May 21, 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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