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Showing results for effectiveness. Search instead for effective design.
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.

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

Their effectiveness depends on a tightly controlled contact point called the "immune synapse," where they release toxic molecules that destroy the target while leaving surrounding healthy cells unharmed.

From Science Daily • Apr. 30, 2026

There never has been a man who asserted anything with more effectiveness, nor whose affirmations rested upon greater oaths, who observed them less.

From "The Prince" by Niccolò Machiavelli




Vocabulary lists containing effectiveness