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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 most effective antipoverty work usually happens when people in local parishes tackle local problems.

From The Wall Street Journal • Jun. 11, 2026

The earnings upgrade is partly offset by higher capital expenditure and an elevated 39.1% effective tax rate, the analyst adds.

From The Wall Street Journal • Jun. 11, 2026

Six months ago, Australia became the first country to ban access to social media for young teenagers and children, though it has since been criticised for not being effective.

From BBC • Jun. 10, 2026

The author argues that these particles may have been among the most effective MN-zymes and could have occupied a central place in the evolutionary history of nanozymes during the OoL on Earth.

From Science Daily • Jun. 10, 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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