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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 company also received a violation for allegedly failing to “implement and effective written injury and illness prevention program” in accordance with state law.

From Los Angeles Times • May 23, 2026

“Are they more effective as a result? Yes.”

From The Wall Street Journal • May 23, 2026

"So the idea of a biomechanical intervention is not new, but there have not been randomized, placebo-controlled studies to show that they're effective."

From Science Daily • May 22, 2026

But Institute chief executive Prof Siddarthan Chandran says it is possible that even one of them could also be effective in the brain and we just don't know it yet.

From BBC • May 22, 2026

Cecilia asked innocently, her face twisted into an indignant expression that was too fake to be effective.

From "Summer of the Mariposas" by Guadalupe García McCall




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