48 entries under rigid topic. ×

1
iron(adjective, mean, hard, tough, harsh)
1
reserved(adjective, tough, firm, solid, stable)
1
stiff-necked(adjective, mean, hard, tough, determined)
1
tough nut to crack(expression, adjective, idiom, mean, hard)
1
uncooperative(adjective, mean, hard, tough, difficult)
1
unflexible(adjective, tough, firm, fixed, stiff)
1
unimpressible(adjective, mean, hard, tough, harsh)
1
uptight(adjective, tough, firm, fixed, distant)
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APASmart Define. (2015). set in stone thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/set_in_stone/thesaurus/synonyms
ChicagoSmart Define. 2015. "set in stone thesaurus" https://smartdefine.org/set_in_stone/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, set in stone thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/set_in_stone/thesaurus/synonyms>.
MLASmart Define. "set in stone thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/set_in_stone/thesaurus/synonyms>