138 entries under stiff topic. ×

8
inflexible(adjective, strong, hard, secure, smooth)
8
packed(adjective, close, set, strong, hard)
8
rocky(adjective, set, strong, hard, firm)
6
bulky(adjective, person, body, strong, big)
6
husky(adjective, person, body, strong, hard)
6
muscular(adjective, person, body, strong, sound)
6
rocklike(adjective, hard, firm, compact)
6
solidified(adjective, set, hard, tough, firm)
6
well-made(adjective, strong, cool, great, sound)
5
changeless(adjective, severe, firm, harsh, stable)
5
compacted(adjective, set, strong, hard, firm)
5
crowded(adjective, close, set, firm, heavy)
5
deep(verb, adjective, set, sound, heavy)
5
jelled(adjective, set, hard, tough, firm)
5
stony(adjective, hard, firm, rigid)
5
unbending(adjective, hard, firm, tense)
5
unbreakable(adjective, strong, hard, tough, severe)
4
adamantine(adjective, set, strong, hard, severe)
4
callous(adjective, set, strong, hard, firm)
4
congealed(adjective, set, hard, tough, firm)
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APASmart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>