69 entries under hard topic. ×

92
strong(adjective, person, clear, body, strong)
46
firm(noun, adjective, strong, sound)
38
sturdy(adjective, person, body, strong)
21
rugged(adjective, strong, sound, tough)
21
tough(adjective, person, body, strong)
19
rigid(adjective, strong, tough, strain)
19
unyielding(adjective, strong, sound, tough)
13
full-bodied(adjective, strong, fit, healthy)
12
sinewy(adjective, strong, sound, tough)
6
concentrated(adjective, strong, sharp, fit)
6
iron(adjective, strong, tough, inflexible)
6
rough(adjective, strong, simple, tough)
3
adamantine(adjective, strong, strength, tough)
3
inflexible(adjective, strong, tough, solid)
2
austere(adjective, strong, tough, sturdy)
2
dense(adjective, person, body, strong)
2
determined(adjective, strong, tough, solid)
2
effective(adjective, strong, tough, sharp)
2
hard as nails(expression, adjective, idiom, strong)
2
harsh(adjective, strong, tough, sturdy)
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APASmart Define. (2016). robust thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/robust/thesaurus/synonyms
ChicagoSmart Define. 2016. "robust thesaurus" https://smartdefine.org/robust/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, robust thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/robust/thesaurus/synonyms>.
MLASmart Define. "robust thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/robust/thesaurus/synonyms>