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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.

Alessandra Bielli, from the Centre for Environment, Fisheries and Aquaculture Science, has been leading a trial since 2019 exploring whether pingers are an effective long-term deterrent when used closer to shore.

From BBC • Jun. 10, 2026

LLC, sent termination notices to more than 300 employees effective July 4.

From Los Angeles Times • Jun. 10, 2026

Another, the Rybar Telegram channel, credited Madyar with creating "the most effective formation of its kind" within the Ukrainian army.

From Barron's • Jun. 10, 2026

Aid returning to Ituri with Ebola-specific funding would be more effective if public health aid simply hadn’t left in the first place.

From Slate • Jun. 9, 2026

Besides, it turned out that they also were incredibly effective fundraising tools.

From "Night Owls" by A.R. Vishny




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