120 entries under severe topic. ×

9
stern(adjective, hard, tough, rough)
8
demanding(adjective, hard, tough, rough)
8
strenuous(adjective, action, strong, tough)
7
bitter(adjective, strong, hard, tough)
7
brutal(adjective, hard, tough, rough)
7
formidable(adjective, hard, evil, rough)
7
heavy(adjective, calm, strong, hard, sound)
7
rigorous(adjective, strong, hard, tough)
7
tempestuous(adjective, calm, violent, wild)
7
uphill(adjective, hard, rough, difficult)
6
exacting(adjective, hard, tough, rough)
6
hairy(adjective, difficult, harsh, delicate)
6
inclement(adjective, hard, tough, rough)
6
mean(adjective, strong, rough, nasty)
6
onerous(adjective, hard, tough, rough)
5
asperous(adjective, hard, sharp, rough)
5
austere(adjective, strong, hard, tough)
5
dissonant(adjective, hard, sharp, flat)
4
cacophonous(adjective, hard, sharp, rough)
4
grating(adjective, hard, sharp, rough)
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APASmart Define. (2015). rugged thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms
ChicagoSmart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rugged thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>.
MLASmart Define. "rugged thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms>