108 entries under heavy topic. ×

3
set(adjective, calm, strong, hard, secure)
3
strapping(adjective, strong, great, sound, tough)
2
able(adjective, strong, sound, tough, fit)
2
active(adjective, strong, sound, tough, solid)
2
athletic(adjective, strong, sound, tough, fit)
2
close-knit(thick, packed, compressed, crowded)
2
compressed(adjective, close, set, strong, hard)
2
concentrated(adjective, set, strong, hard, tough)
2
condensed(hard, solid, rigid, thick)
2
critical(adjective, big, important, significant)
2
cumbersome(adjective, big, awkward, large)
2
fat(adjective, hard, great, big)
2
mighty(adjective, strong, sound, tough, fit)
2
muscular(adjective, strong, sound, tough, fit)
2
obese(adjective, hard, solid, big)
2
staid(adjective, firm, solid, big)
2
well-made(adjective, strong, sound, tough, solid)
1
capable(adjective, strong, sound, tough, fit)
1
close-grained(adjective, close, set, hard, tough)
1
cumbrous(big, awkward, large, weighty)
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APASmart Define. (2016). substantial thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/substantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "substantial thesaurus" https://smartdefine.org/substantial/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, substantial thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/substantial/thesaurus/synonyms>.
MLASmart Define. "substantial thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/substantial/thesaurus/synonyms>