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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Penalties made a big difference — both ways Penalties hit Missouri hard against Alabama last week, and the Tigers continued to look undisciplined at times Saturday. Maddie Hartley, Kansas City Star, 19 Oct. 2025 An undisciplined, unproductive outing against the Jets in London at least momentarily provided reason to hit the pause button. Parker Gabriel, Denver Post, 17 Oct. 2025 That type of breaking is undisciplined indulgence that is normally meant to terrorize and threaten people and is driven by people who operate from a place of smallness, ego fragility, and fear of their own powerlessness. Brené Brown, Fortune, 14 Oct. 2025 The Eagles were unsound and undisciplined. Zach Berman, New York Times, 10 Oct. 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 25 Oct. 2025.

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