153 entries under substantial topic. ×

1
equable(adjective, calm, strong, firm, fast)
1
fixed resistant(expression, calm, strong, steady)
1
gross(adjective, material, big, heavy)
1
immanent
1
in fine feather(expression, adjective, idiom, strong, sound)
1
meaty(adjective, big, heavy, large)
1
motionless(strong, secure, steady, fixed)
1
nailed(adjective, calm, strong, secure, firm)
1
narrow(adjective, close, strong, firm, short)
1
never-failing(adjective, firm, certain, steady)
1
perdurable(calm, strong, steady, even)
1
phenomenal(extraordinary, material, unusual, exceptional, outstanding)
1
poised(adjective, calm, strong, firm, certain)
1
ponderous(adjective, big, heavy, large)
1
short(adjective, close, direct, smooth, right)
1
solid as a rock(expression, adjective, idiom, calm, strong)
1
stabile(adjective, calm, strong, firm, fast)
1
stark(adjective, strong, hard, sound, tough)
1
staying put(expression, calm, strong, steady)
1
together(adjective, calm, strong, firm, perfect)
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APASmart Define. (2016). solid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>