138 entries under stiff topic. ×

12
stalwart(adjective, calm, person, body, strong)
11
heavy(adjective, characteristic, person, set, body)
11
close(adjective, set, hard, tough, correct)
11
durable(adjective, calm, strong, sound, tough)
11
fast(verb, adjective, adverb, calm, strong)
11
impenetrable(adjective, close, set, hard, tough)
11
powerful(adjective, good, person, clear, body)
11
staunch(noun, adjective, calm, good, strong)
11
tight(adjective, adverb, good, close, strong)
10
compressed(adjective, set, hard, tough, firm)
10
concentrated(adjective, set, hard, complete, tough)
10
robust(adjective, person, body, strong, sound)
10
set(adjective, calm, strong, hard, secure)
10
unyielding(adjective, set, strong, hard, sound)
10
well-built(adjective, calm, person, body, strong)
9
consolidated(adjective, state, close, set, hard)
9
hefty(adjective, person, body, strong, hard)
9
vigorous(adjective, strong, sound, complete, tough)
8
condensed(adjective, set, hard, tough, heavy)
8
hardy(adjective, person, body, strong, sound)
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APASmart Define. (2016). solid thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>