"recalcitrant" in the adjective sense
1. fractious, refractory, recalcitrant
stubbornly resistant to authority or control
"a fractious animal that would not submit to the harness"
"a refractory child"
marked by stubborn resistance to authority
"the University suspended the most recalcitrant demonstrators"
Source: WordNet® (An amazing lexical database of English)
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