120 entries under substantial topic. ×

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no-nonsense(big, heavy)
0
noteworthy(significant, large)
0
noticeable(significant, large)
0
portentous(big, heavy)
0
reasonable(significant, large)
0
renowned(significant, large)
0
sedate(big, heavy)
0
sober(big, heavy)
0
solemn(big, heavy)
0
solid gold(expression, significant, large)
0
somber(big, heavy, cruel, domineering)
0
something(significant, large)
0
something else(expression, significant, large)
0
staid(big, heavy)
0
super-duper(significant, large)
0
to the max(expression, idiom, significant, large)
0
tolerable(significant, large)
0
underlined(big, heavy)
0
unreal(significant, large)
0
venerable(significant, large)
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APASmart Define. (2015). hefty thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/hefty/thesaurus/synonyms
ChicagoSmart Define. 2015. "hefty thesaurus" https://smartdefine.org/hefty/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, hefty thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hefty/thesaurus/synonyms>.
MLASmart Define. "hefty thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/hefty/thesaurus/synonyms>