113 entries under hard topic. ×

11
massive(adjective, person, body, deep)
11
material(adjective, strong, physical, material)
11
tight(adjective, adverb, good, close, strong)
10
compressed(adjective, set, tough, firm)
10
concentrated(adjective, set, complete, tough)
10
set(adjective, calm, strong, secure)
10
unyielding(adjective, set, strong, sound)
9
consolidated(adjective, state, close, set)
9
hefty(adjective, person, body, strong)
8
condensed(adjective, set, tough, heavy)
8
inflexible(adjective, strong, secure, smooth)
8
packed(adjective, close, set, strong)
8
rocky(adjective, set, strong, firm)
8
stocky(adjective, person, body, strong)
6
healthy(adjective, strong, sound, complete)
6
husky(adjective, person, body, strong)
6
rocklike(adjective, firm, stiff, compact)
6
solidified(adjective, set, tough, firm)
6
unshakable(adjective, strong, secure, tough)
5
compacted(adjective, set, strong, firm)
10 years ago|51k views|share |citing 
APASmart Define. (2016). solid thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>