C2 adjective /ˌkɒn.tjʊˈmeɪ.ʃəs/
contumacious
固执的, 叛逆的
Meaning
stubbornly disobedient or rebellious
Example
The contumacious student refused to follow the school rules.
那位固执的学生拒绝遵守学校的规章制度。