75 entries under heavy topic. ×

4
stubby(adjective, hard, short, deep)
3
cumbersome(adjective, big, awkward, substantial)
3
flabby(adjective, weak, soft, round)
3
heavyweight(adjective, big, substantial)
2
compact(hard, deep, sturdy, broad)
2
substantial(adjective, hard, great, big)
2
thick-bodied(solid, short, stout, thickset)
2
zaftig(solid, awkward, substantial, round)
1
burdensome(big, awkward, substantial, large)
1
consequential(big, important, significant, substantial)
1
considerable(great, big, significant, awkward)
1
cumbrous(big, awkward, substantial, large)
1
excessive(great, big, awkward, substantial)
1
material(big, important, significant, substantial)
1
meaningful(big, important, significant, substantial)
1
momentous(big, important, significant, substantial)
1
significant(adjective, big, important, substantial)
0
big deal(expression, big, substantial)
0
critical(big, substantial)
0
crucial(big, substantial)
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APASmart Define. (2016). fat thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fat/thesaurus/synonyms
ChicagoSmart Define. 2016. "fat thesaurus" https://smartdefine.org/fat/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, fat thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fat/thesaurus/synonyms>.
MLASmart Define. "fat thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/fat/thesaurus/synonyms>