121 entries under severe topic. ×

17
unfeeling(noun, adjective, mean, bad, hard)
15
tough(noun, adjective, mean, strong, hard)
10
hard(adjective, mean, strong, sound, tough)
9
harsh(adjective, mean, strong, hard, tough)
7
strict(adjective, strong, hard, tough)
6
hard-nosed(adjective, mean, strong, hard, tough)
6
rough(adjective, person, strong, hard, simple)
6
ruthless(adjective, hard, sharp, rough)
6
stern(adjective, hard, tough, rough)
5
merciless(adjective, person, hard, rough)
4
unkind(adjective, bad, hard, tough)
3
firm(adjective, mean, strong, hard, tough)
3
pitiless(adjective, hard, sharp, nasty)
2
brutal(adjective, hard, tough, sharp)
2
exacting(adjective, hard, tough, rough)
2
hard-line(adjective, strong, hard, tough)
2
no-nonsense(adjective, calm, simple, tough)
2
oppressive(adjective, tough, firm, harsh)
2
rigid(adjective, mean, strong, hard, tough)
2
savage(adjective, hard, rough, harsh)
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APASmart Define. (2016). hard-boiled thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-boiled/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard-boiled thesaurus" https://smartdefine.org/hard-boiled/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, hard-boiled thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-boiled/thesaurus/synonyms>.
MLASmart Define. "hard-boiled thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard-boiled/thesaurus/synonyms>