136 entries under tough topic. ×

45
stubborn(adjective, obstinate, characteristic, quality, stubbornness)
31
refractory(adjective, control, order, difficulty)
28
obstinate(adjective, control, order, strong, hard)
28
unmanageable(adjective, control, order, hard)
27
recalcitrant(adjective, control, order, firm)
26
inflexible(adjective, strong, hard, rough)
22
headstrong(adjective, strong, hard, rough)
22
unyielding(adjective, appearance, hard, rough)
18
adamant(adjective, hard, firm, determined)
17
contumacious(adjective, firm, determined, negative)
16
obdurate(adjective, firm, difficult, violent)
14
dogged(adjective, appearance, firm, terrible)
14
insubordinate(adjective, firm, negative, hostile)
14
perverse(adjective, mean, difficulty, firm)
13
rebellious(adjective, firm, negative, hostile)
13
rigid(adjective, firm, persistent, obstinate)
13
uncompromising(adjective, hard, rough, firm)
12
difficult(adjective, obstinate, stubborn, problematic)
12
mulish(adjective, firm, difficult, indifferent)
12
unbending(adjective, hard, rough, firm)
<12345…7>
11 years ago|15k views|share |citing 
APASmart Define. (2015). intractable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/intractable/thesaurus/synonyms
ChicagoSmart Define. 2015. "intractable thesaurus" https://smartdefine.org/intractable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, intractable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/intractable/thesaurus/synonyms>.
MLASmart Define. "intractable thesaurus" 24 June 2015. Web. 26 September 2026. <https://smartdefine.org/intractable/thesaurus/synonyms>