63 entries under significant topic. ×

1
firm(adjective, strong, hard, sound, tough)
1
generous(great, big, substantial, large)
1
material(adjective, strong, hard, solid, big)
1
mondo(substantial, large)
1
plentiful(great, big, substantial, large)
1
stable(adjective, strong, hard, solid, big)
0
appreciable(substantial, large)
0
astronomical(substantial, large)
0
big-deal(large, considerable)
0
bountiful(substantial, large)
0
comfortable(substantial, large, generous, good-sized)
0
distinguished(substantial, large)
0
doozie(substantial, large)
0
durable(strong, solid, large, robust)
0
dynamite(substantial, large)
0
essential(substantial, large)
0
extraordinary(large, considerable)
0
fab(substantial, large)
0
influential(substantial, large)
0
key(large, considerable)
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APASmart Define. (2015). hefty thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hefty/thesaurus/synonyms
ChicagoSmart Define. 2015. "hefty thesaurus" https://smartdefine.org/hefty/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, hefty thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hefty/thesaurus/synonyms>.
MLASmart Define. "hefty thesaurus" 17 July 2015. Web. 21 September 2026. <https://smartdefine.org/hefty/thesaurus/synonyms>