103 entries under hard topic. ×

1
concentrated(adjective, strong, tough, solid)
1
concrete(adjective, set, strong, tough)
1
hard-line(adjective, strong, tough, rugged)
1
hardened(strong, tough, fit, solid)
1
hulk(adjective, strong, substantial, compact)
1
hunk(adjective, strong, substantial, compact)
1
impervious(tough, solid, rigid, inflexible)
1
mulish(adjective, strong, tough, firm)
1
obdurate(adjective, strong, tough, firm)
1
relentless(adjective, strong, tough, firm)
1
rocklike(adjective, strong, true, substantial)
1
rooted(adjective, strong, solid, substantial)
1
serious(adjective, strong, tough, solid)
0
astringent(adjective, strong, tough, rugged)
0
austere(adjective, strong, tough, rugged)
0
authoritarian(adjective, strong, tough, energetic)
0
bitter(adjective, strong, tough, rugged)
0
bullheaded(adjective, strong, tough, rugged)
0
by the book(expression, adjective, idiom, strong)
0
close-grained(tough, solid, rigid, inflexible)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>