76 entries under heavy topic. ×

25
hefty(adjective, hard, difficult, complex)
25
weighty(adjective, hard, difficult, important)
22
massive(adjective, hard, difficult, complex)
22
ponderous(adjective, hard, difficult, complex)
20
burdensome(adjective, hard, difficult, complex)
7
heavy(noun, adjective, order, great, tough)
6
big(adjective, great, informal, important)
6
chief(noun, adjective, order, superior)
6
considerable(adjective, big, important, significant)
5
fat(adjective, big, substantial)
4
consequential(adjective, big, important, significant)
4
critical(adjective, great, big, important)
4
crucial(adjective, great, big, important)
4
important(adjective, great, big, important)
4
momentous(adjective, big, important, outstanding)
4
substantial(adjective, big, important, significant)
3
bulky(adjective, big, significant, substantial)
2
abundant(adjective, significant, large, considerable)
2
ample(adjective, significant, large, considerable)
2
corpulent
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APASmart Define. (2016). heavyweight thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heavyweight/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavyweight thesaurus" https://smartdefine.org/heavyweight/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heavyweight thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heavyweight/thesaurus/synonyms>.
MLASmart Define. "heavyweight thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/heavyweight/thesaurus/synonyms>