304 entries under adjective topic. ×

14
insubordinate(tough, firm, negative, hostile)
14
perverse(mean, tough, difficulty, firm)
14
undisciplined(control, order, difficult, resist)
13
defiant(persistent, obstinate, insistent, dogged)
13
rebellious(tough, firm, negative, hostile)
13
rigid(tough, firm, persistent, obstinate)
13
uncompromising(hard, tough, rough, firm)
12
difficult(tough, obstinate, stubborn, problematic)
12
immovable(hard, firm, difficult, determined)
12
mulish(tough, firm, difficult, indifferent)
12
unbending(hard, tough, rough, firm)
11
determined(deliberate, fixed, resolute, persistent)
11
pigheaded(tough, firm, deliberate, determined)
10
hard(tough, sharp, firm, fixed)
10
incorrigible(bad, hopeless, obstinacy)
10
intransigent(tough, firm, difficult, determined)
10
self-willed(tough, firm, difficult, determined)
10
tough(hard, rough, firm, difficult)
9
implacable(hard, tough, firm, cruel)
9
obstreperous(control, order, tough, resist)
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APASmart Define. (2015). intractable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/intractable/thesaurus/synonyms
ChicagoSmart Define. 2015. "intractable thesaurus" https://smartdefine.org/intractable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, intractable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/intractable/thesaurus/synonyms>.
MLASmart Define. "intractable thesaurus" 24 June 2015. Web. 23 September 2026. <https://smartdefine.org/intractable/thesaurus/synonyms>