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Definition of undisciplined
undisciplined
/ˌʌnˈdɪs.ə.plɪnd/
un · dis · ci · plined
undisciplined Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
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• adjective
1
Lacking in self-control, obedience, or proper training; behaving in a disorderly or unruly manner.
Example
"The coach struggled to manage the undisciplined players who repeatedly ignored the team rules."
2
Not systematic, structured, or guided by rigorous method or critical standards.
Example
"Although her early writing was somewhat undisciplined, she eventually developed a clear and methodical style."
Synonyms
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Word Origin & Etymology
Formed in the 16th century from the negative prefix 'un-' and 'disciplined', which ultimately derives from the Latin 'disciplina' (instruction, teaching, or training), from 'discipulus' (pupil).
Cite this Entry
Wordmom. (2026). Definition of Undisciplined. In Wordmom Dictionary. Retrieved Nov 4, 2026, from https://wordmom.com/dictionary/undisciplined