ineffective

adjective

in·​ef·​fec·​tive ˌi-nə-ˈfek-tiv How to pronounce ineffective (audio)
1
: not producing an intended effect : ineffectual
ineffective lighting
2
: not capable of performing efficiently or as expected : incapable
an ineffective executive
ineffectively adverb
ineffectiveness noun

Examples of ineffective in a Sentence

The treatment was ineffective against the disease. an ineffective effort to reduce unemployment that only spurred inflation
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The intraparty wrangling has also hit the Democratic National Committee, where leaders are pressuring Hogg to drop a push to primary some Democratic incumbents deemed ineffective and aging. Dave Goldiner, New York Daily News, 28 Apr. 2025 The Crown’s offensive diversity — featuring 10 different goal scorers this season — proved ineffective against New England’s tactical discipline. Colin Cerniglia, Charlotte Observer, 27 Apr. 2025 Though academic studies and publications such as The Economist have long argued that economic sanctions are ineffective as a tool of geopolitics, the United States has emerged as the architect of a world awash in economic warfare. Julian Ku, National Review, 26 Apr. 2025 Perhaps certain prime-time blocks are ineffective and need shifting. Dan Pontefract, Forbes.com, 26 Apr. 2025 See All Example Sentences for ineffective

Word History

First Known Use

1649, in the meaning defined at sense 1

Time Traveler
The first known use of ineffective was in 1649

Browse Nearby Words

Cite this Entry

“Ineffective.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ineffective. Accessed 3 May. 2025.

Kids Definition

ineffective

adjective
in·​ef·​fec·​tive ˌin-ə-ˈfek-tiv How to pronounce ineffective (audio)
1
: not producing the desired effect
an ineffective law
2
: not performing as well as expected or needed
an ineffective leader
ineffectively adverb
ineffectiveness noun

More from Merriam-Webster on ineffective

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!