61 entries under hard topic. ×

19
massy(adjective, difficult, complex)
19
painful(adjective, difficult, complex)
19
punishing(adjective, difficult, complex)
19
rough(adjective, difficult, complex)
19
toilsome(adjective, difficult, complex)
18
grave(adjective, difficult, complex)
18
serious(adjective, difficult, complex)
18
tight(adjective, difficult, complex, compact)
17
strong(adjective, person, body, tough)
16
substantial(adjective, strong, great, tough)
15
heavy(adjective, person, dull, body, strong)
8
solid(adjective, person, body, strong)
3
sound(adjective, strong, tough, fit)
3
thick(adjective, person, body, strong)
2
dense(adjective, person, body, strong)
1
brick wall(expression, adjective, strong, substantial)
1
close(adjective, strong, harsh, cruel)
1
compact(adjective, strong, heavy, substantial)
1
compacted(adjective, strong, substantial, sturdy)
1
concentrated(adjective, strong, tough, powerful)
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APASmart Define. (2015). hefty thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/hefty/thesaurus/synonyms
ChicagoSmart Define. 2015. "hefty thesaurus" https://smartdefine.org/hefty/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, hefty thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/hefty/thesaurus/synonyms>.
MLASmart Define. "hefty thesaurus" 17 July 2015. Web. 22 September 2026. <https://smartdefine.org/hefty/thesaurus/synonyms>