36 entries under large topic. ×

8
gargantuan
6
big(adjective, great, informal, heavy, important)
6
considerable(adjective, big, heavy, important, significant)
6
major-league(adjective, great, extraordinary, important, significant)
4
consequential(adjective, big, heavy, important, significant)
4
momentous(adjective, big, heavy, important, outstanding)
4
substantial(adjective, big, heavy, important, significant)
3
bulky(adjective, big, heavy, significant, substantial)
2
abundant(adjective, heavy, significant, considerable)
2
ample(adjective, heavy, significant, considerable)
2
key(significant, considerable)
2
material(big, heavy, significant, substantial)
2
significant(great, big, heavy, important, substantial)
1
durable(adjective, significant, considerable)
1
extensive(significant, considerable)
1
extraordinary(great, outstanding, significant, notable)
1
generous(adjective, significant, considerable)
1
monumental(great, extraordinary, outstanding, huge)
1
sizable(significant, considerable)
1
stout(adjective, big, heavy, significant, substantial)
<12>
10 years ago|4.1k views|share |citing 
APASmart Define. (2016). heavyweight thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heavyweight/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavyweight thesaurus" https://smartdefine.org/heavyweight/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, heavyweight thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heavyweight/thesaurus/synonyms>.
MLASmart Define. "heavyweight thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/heavyweight/thesaurus/synonyms>