undisciplined

adjective

un·​dis·​ci·​plined ˌən-ˈdi-sə-plənd How to pronounce undisciplined (audio)
: lacking in discipline or self-control
undisciplined behavior
an unruly and undisciplined child

Examples of undisciplined in a Sentence

Recent Examples on the Web
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Krypto, who also sports a red cape but behaves like an undisciplined puppy-school reject, borders on cutesy. David Rooney, HollywoodReporter, 8 July 2025 At its core, this undisciplined play stems from a stagnant style of offense. Julia Poe, Chicago Tribune, 19 June 2025 Edmonton trailed Monday's game 2-0 entering the second period after a series of undisciplined errors gave the Panthers four first-period power plays. Tyler Everett, MSNBC Newsweek, 12 June 2025 New York built its lead in part through undisciplined Indiana fouls; the Pacers wanted to improve at defending without fouling while grabbing more rebounds. Andrew Greif, NBC news, 23 May 2025 See All Example Sentences for undisciplined

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of undisciplined was in the 14th century

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Cite this Entry

“Undisciplined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undisciplined. Accessed 29 Jul. 2025.

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