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Definitions

effectiveness

[ih-fek-tiv-nis, ee-fek‐] / ɪˈfɛk tɪv nɪs, iˈfɛk‐ /




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.

Also, doubts remain about the effectiveness of the U.S.-Iran cease-fire agreement and the progress of peace negotiations, the strategists add.

From The Wall Street Journal • Apr. 10, 2026

Intense competition is pushing manufacturers to improve effectiveness while slashing costs, sometimes to less than $1,000 per unit, making them "affordable", Myronenko said.

From Barron's • Apr. 9, 2026

By analysing millions of their genetic variants, the researchers found a pattern suggesting a link between some variants and the effectiveness of the drugs.

From BBC • Apr. 8, 2026

Nine biosimilars — which are FDA-approved drugs with the same safety, effectiveness and treatment benefits as the original drug — flooded the market at substantially lower prices.

From MarketWatch • Apr. 7, 2026

The great joke about Puttenham, though, is that he survives not only for his work on rhetoric but as an instance of its effectiveness.

From "Words Like Loaded Pistols" by Sam Leith




Vocabulary lists containing effectiveness