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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.

FDA regulations also require the agency to assess both safety and effectiveness before approving a substance for compounding.

From Salon • Apr. 4, 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

Users hit back at Papperger's comments with jokes and memes highlighting the effectiveness of Ukrainian drones and anti-drone defences.

From Barron's • Mar. 29, 2026

Frequently use self-assessment as a means to improve future performance and to increase their effectiveness with those around them.

From "Music and the Child" by Natalie Sarrazin