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Definitions

effectiveness

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




Example Sentences

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Research by the International Monetary Fund finds that rule of law is necessary for long-term economic growth and that “within the rule of law, the effectiveness of the justice system…are critical to economic outcomes.”

From Barron's • Apr. 1, 2026

The trend continued into the 1990s, with the likes of Roger Clemens, Curt Schilling and John Smoltz deploying it with deadly effectiveness.

From The Wall Street Journal • Mar. 31, 2026

Despite doubts about their effectiveness, Minicircle’s gene therapy and others like it are available at an increasing number of clinics across the world.

From Slate • Mar. 30, 2026

This research shows that effectiveness depends not only on whether a drug reaches a tumor, but also on how it spreads within it and inside individual cells.

From Science Daily • Mar. 27, 2026

Where’s our innocent discussion about the effectiveness of speed limits?

From "The Benefits of Being an Octopus" by Ann Braden