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
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.
Cowan wasn’t alone in his undisciplined play, however. Joshua Kloke, The Athletic, 3 Jan. 2025 State of play: His undisciplined behavior and head coach Matt Eberflus' head-scratching defense call have analysts and fans calling for action. Justin Kaufmann, Axios, 28 Oct. 2024 This undisciplined, expensive, and bloody strategy has done untold harm to U.S. national security. Barry R. Posen, Foreign Affairs, 1 Jan. 2013 The defense presented no resistance against Jacobs, Love and Co. with poor tackling and undisciplined play. The Athletic Nfl Staff, The Athletic, 24 Dec. 2024 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

Dictionary Entries Near undisciplined

Cite this Entry

“Undisciplined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undisciplined. Accessed 1 Feb. 2025.

More from Merriam-Webster on undisciplined

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!