7
contradictory(determined, negative, hostile, fixed, different)
7
pigheaded(adjective, tough, firm, difficult, determined)
7
uncompliant(adjective, tough, firm, stubborn, disobedience)
7
undisciplined(adjective, control, order, difficult, resist)
7
wild(adjective, control, order, tough, difficult)
6
dogged(adjective, tough, firm, determined, unreasonable)
6
immovable(adjective, tough, firm, difficult, determined)
6
incompliant(adjective, hard, tough, firm, difficult)
6
indocile(adjective, control, order, tough, difficult)
6
resolute(adjective, tough, firm, difficult, obstinate)
6
tough(adjective, hard, rough, firm, grim)
6
uncompromising(adjective, tough, firm, difficult, violent)
6
unwilling(adjective, mood, obstinate, averse, disinclined)
5
balky(tough, firm, negative, hostile, obstinate)
5
cantankerous(adjective, tough, firm, difficult, wild)
5
insurgent(adjective, persistent, obstinate, insistent, dogged)
5
intransigent(adjective, tough, firm, determined, stubborn)
5
recusant(violent, negative, hostile, different, adverse)
5
resolved(adjective, determined, fixed, persistent, obstinate)
5
unbending(adjective, hard, tough, rough, firm)
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APASmart Define. (2015). refractory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms
ChicagoSmart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, refractory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>.
MLASmart Define. "refractory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms>