105 entries under substantial topic. ×

3
heavyweight(adjective, big, heavy)
2
bountiful(significant, large)
2
comfortable(adjective, easy, significant, rich)
2
goodly(great, big, significant, large)
2
large-scale(adjective, big, significant, large)
2
lavish(bright, significant, large, expensive)
2
oversize(adjective, great, important, full)
2
sizeable(significant, large)
2
zaftig(solid, heavy, awkward, round)
1
burdensome(big, heavy, awkward, large)
1
commodious(significant, large)
1
consequential(big, heavy, important, significant)
1
considerable(great, big, heavy, significant, awkward)
1
cumbrous(big, heavy, awkward, large)
1
distinguished(big, important, significant, large)
1
doozie(big, important, significant, large)
1
dynamite(big, important, significant, amazing)
1
essential(big, important, significant, large)
1
excessive(great, big, heavy, awkward)
1
extensive(great, big, significant, large)
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APASmart Define. (2016). fat thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fat/thesaurus/synonyms
ChicagoSmart Define. 2016. "fat thesaurus" https://smartdefine.org/fat/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, fat thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fat/thesaurus/synonyms>.
MLASmart Define. "fat thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/fat/thesaurus/synonyms>