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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.

The agency first approved mifepristone in 2000, after evaluation of rigorous studies demonstrating its effectiveness and safety.

From Slate • May 4, 2026

The median length of antidepressant treatment in the U.S. is five years, another study found, despite limited evidence about the effectiveness of such long-term use.

From The Wall Street Journal • May 4, 2026

They issued a report reimagining the state superintendent as a student “champion” who would analyze and report on the effectiveness of the education system and also take on an advocacy role.

From Los Angeles Times • May 1, 2026

Proteases, enzymes that recycle proteins, can rapidly cut peptides into individual amino acids, shortening their effectiveness.

From Science Daily • Apr. 28, 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