undisciplined

adjective

un·​dis·​ci·​plined ˌən-ˈdi-sə-plənd 

: lacking in discipline or self-control

undisciplined behavior

an unruly and undisciplined child

Examples of undisciplined in a Sentence

Recent Examples on the Web

Even after the historic win, Whitley was upset about undisciplined plays. — Jack Leo, AJC.com, 22 Sep. 2026

Antonia, as powerful as her mother but as undisciplined as her aunt, must learn that practice makes perfect. — Brittany Allen, Literary Hub, 8 Sep. 2026

Babcock is the last chance Texaco for a gifted but undisciplined roster. — Allan Mitchell, New York Times, 20 July 2026

McCain called her ex-colleagues 's‑‑‑‑y and undisciplined' during the on-air discussion. — Joey Nolfi, Entertainment Weekly, 17 June 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for undisciplined

• disciplined