indiscipliné
undisciplined, unruly
adjective an-dee-see-plee-NEH Rare
Usage Note
Indiscipliné (feminine indisciplinée) describes a person or group that does not follow rules or authority. It is common in educational and military contexts — un élève indiscipliné (an unruly pupil). The corresponding noun is l'indiscipline (f), and the antonym is discipliné. The word is formal enough for written reports but also used in everyday speech.
Examples
"La classe est devenue trop indisciplinée."
Natural Translation
The class has become too unruly.

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