63 entries under stiff topic. ×

25
hard(adjective, mean, cool, tough, severe)
24
callous(adjective, person, mean, hard, cool)
24
tough(adjective, mean, hard, cool, severe)
19
inflexible(adjective, person, hard, firm, solid)
15
rocky(adjective, firm, harsh, coarse, irregular)
13
adamantine(adjective, firm, rigid, stubborn)
11
hardened(adjective, person, hard, tough, severe)
10
firm(adjective, hard, solid, cold, indifferent)
10
rigid(adjective, set, hard, firm, solid)
10
unyielding(adjective, mean, hard, firm, harsh)
9
rocklike(adjective, firm, rigid)
7
impenetrable(adjective, hard, firm, unfeeling)
6
unbreakable(adjective, firm, rigid, unyielding)
5
solid(adjective, hard, firm, rigid)
4
dense(adjective, set, strong, hard, firm)
4
fixed(adjective, hard, firm, solid)
3
refractory(adjective, hard, firm, solid)
3
set(adjective, hard, firm, solid)
3
strong(adjective, set, hard, firm)
2
compressed(adjective, set, strong, hard, firm)
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APASmart Define. (2016). stony thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stony/thesaurus/synonyms
ChicagoSmart Define. 2016. "stony thesaurus" https://smartdefine.org/stony/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, stony thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stony/thesaurus/synonyms>.
MLASmart Define. "stony thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/stony/thesaurus/synonyms>