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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.

Stephanie Hunter McMahon, a tax-law professor at Indiana University’s Maurer School of Law, isn’t convinced that a tax strike is an effective form of protest.

From MarketWatch • Apr. 6, 2026

The guardrails that exist to prevent this process, dubbed “predicate laundering,” have, in the past, been shown to be reasonably effective.

From Salon • Apr. 6, 2026

Some privacy and policing experts said the technology could be vulnerable to cyberattacks, lead to abuses of force, or divert resources from more effective safety measures.

From The Wall Street Journal • Apr. 5, 2026

"A youth movement will be more effective when internal divisions are minimal, there is ideological plurality without antagonism, and there are few established parties that can easily hijack the movement's results."

From BBC • Apr. 5, 2026

As one private eye put it, he might be a “miserable snake,” but he was also “the silent, secret, and effective Avenger of the outraged Majesty of the Law when everything else fails.”

From "Killers of the Flower Moon" by David Grann