75 entries under inflexible topic. ×

47
firm(noun, adjective, hard, strain, rough)
46
stiff(adjective, hard, tough, strain, rough)
43
hard(adjective, tough, strain, rough, firm)
36
unyielding(adjective, hard, tough, strain, rough)
29
recalcitrant(adjective, control, order, tough, difficult)
28
rigid(adjective, hard, tough, strain, firm)
24
resistant(adjective, strain, firm, solid, firmness)
23
unmanageable(adjective, control, order, hard, tough)
20
unalterable(adjective, hard, strain, rough, harsh)
19
contrary(adjective, tough, difficult, cross, wild)
19
tight(adjective, strain, firm, solid, firmness)
15
wayward(adjective, tough, difficult, violent, wild)
10
uncooperative(adjective, tough, difficult, wild, awkward)
6
incompliant(adjective, hard, tough, firm, difficult)
6
indocile(adjective, control, order, tough, difficult)
6
tough(adjective, hard, rough, firm, grim)
5
unbending(adjective, hard, tough, rough, firm)
4
sturdy(adjective, hard, tough, solid, rigid)
3
fixed(adjective, hard, tough, rough, firm)
3
set(adjective, hard, tough, firm, solid)
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APASmart Define. (2015). refractory thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms
ChicagoSmart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, refractory thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>.
MLASmart Define. "refractory thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms>