108 entries under difficult topic. ×

19
sensitive(adjective, hard, delicate, uncertain)
19
serious(adjective, strong, hard, tough)
19
stubborn(adjective, strong, hard, tough, difficulty)
19
toilful(adjective, hard, complex, awkward)
18
dire(adjective, hard, unpleasant, complex)
18
painful(adjective, hard, tough, harsh)
18
punishing(adjective, hard, complex)
12
scabrous(adjective, smooth, rough, harsh)
9
stern(adjective, hard, tough, severe, rough)
8
demanding(adjective, hard, tough, severe, rough)
8
strenuous(adjective, action, strong, tough, severe)
7
bitter(adjective, strong, hard, tough, severe)
7
brutal(adjective, hard, tough, severe, rough)
7
formidable(adjective, hard, severe, evil, rough)
7
heavy(adjective, calm, strong, hard, sound)
7
rigorous(adjective, strong, hard, tough, severe)
7
uphill(adjective, hard, severe, rough)
6
exacting(adjective, hard, tough, severe, rough)
6
hairy(adjective, severe, harsh, delicate)
6
inclement(adjective, hard, tough, severe, rough)
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APASmart Define. (2015). rugged thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms
ChicagoSmart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rugged thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>.
MLASmart Define. "rugged thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms>