103 entries under harsh topic. ×

1
bitter(adjective, strong, hard, tough, severe)
1
bullhead(adjective, mean, hard, tough)
1
bullheaded(adjective, strong, hard, tough, severe)
1
dead set(expression, adjective, tough, severe, firm)
1
disciplinary(adjective, strong, hard, tough, severe)
1
dogged(adjective, mean, hard, inflexible)
1
dour(adjective, hard, tough, severe, sharp)
1
draconian(adjective, tough, severe, firm)
1
dyed-in-the-wool(adjective, strong, hard, tough, severe)
1
fixed(adjective, mean, hard, rough)
1
flinty(adjective, strong, hard, tough, severe)
1
forbidding(adjective, person, strong, hard, tough)
1
frowning(adjective, strong, hard, tough, severe)
1
grim(adjective, strong, hard, tough, severe)
1
hang-tough(adjective, strong, hard, tough, severe)
1
hard-core(adjective, strong, hard, tough, severe)
1
hard-shell(adjective, strong, hard, tough, severe)
1
hard as nails(expression, adjective, idiom, hard, tough)
1
inexorable(adjective, mean, strong, hard, tough)
1
iron(adjective, mean, hard, tough)
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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>