128 entries under difficult topic. ×

11
inclement(adjective, nature, quiet, hard, severe)
11
scabrous(adjective, smooth, rude, property)
10
bitter(adjective, strong, hard, tough, severe)
10
formidable(adjective, hard, tough, nasty)
10
heavy(noun, adjective, calm, strong, hard)
10
unpleasant(adjective, hard, severe, nasty)
9
austere(adjective, strong, hard, simple, tough)
7
demanding(adjective, hard, tough, severe)
7
merciless(adjective, person, hard, harsh)
7
rigorous(adjective, strong, hard, tough, severe)
7
stern(adjective, hard, tough, severe)
6
mean(noun, adjective, hard, severe, lower)
6
stiff(adjective, hard, severe, harsh)
6
strenuous(adjective, action, hard, great, tough)
5
cantankerous(adjective, hard, nasty, dark)
5
exacting(adjective, hard, tough, severe)
5
onerous(adjective, hard, great, tough, severe)
5
uphill(adjective, hard, great, tough)
4
effortful(adjective, great, tough, heavy)
4
inflexible(adjective, person, strong, hard, tough)
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APASmart Define. (2016). rough thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rough/thesaurus/synonyms
ChicagoSmart Define. 2016. "rough thesaurus" https://smartdefine.org/rough/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, rough thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rough/thesaurus/synonyms>.
MLASmart Define. "rough thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/rough/thesaurus/synonyms>