65 entries under hard topic. ×

46
harsh(adjective, mean, tough, easy)
43
severe(adjective, appearance, mean, tough)
36
rigid(adjective, tough, easy, severe)
34
austere(adjective, appearance, tough, severe)
33
strict(adjective, tough, easy, severe)
25
rigorous(adjective, tough, severe, rough)
24
cruel(adjective, person, appearance, mean)
22
tough(adjective, easy, severe, rough)
21
inflexible(adjective, tough, severe, rough)
19
stringent(adjective, tough, severe, rough)
19
adamant(adjective, mean, rough, firm)
18
unyielding(adjective, appearance, mean, easy)
16
firm(noun, adjective, tough, severe)
14
exacting(adjective, tough, easy, severe)
14
dour(adjective, tough, severe, sharp)
14
demanding(adjective, easy, severe, rough)
14
unkind(adjective, person, tough, severe)
13
obdurate(adjective, mean, tough, severe)
13
unbending(adjective, tough, severe, rough)
12
brutal(adjective, person, mean, tough)
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APASmart Define. (2016). stern thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stern/thesaurus/synonyms
ChicagoSmart Define. 2016. "stern thesaurus" https://smartdefine.org/stern/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, stern thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stern/thesaurus/synonyms>.
MLASmart Define. "stern thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/stern/thesaurus/synonyms>