57 entries under strong topic. ×

1
authoritarian(adjective, hard, tough, severe)
1
bitter(adjective, hard, tough, severe)
1
bullheaded(adjective, hard, tough, severe)
1
by the book(expression, adjective, idiom, hard)
1
cruel(adjective, hard, tough, severe)
1
disciplinary(adjective, hard, tough, severe)
1
forbidding(adjective, hard, tough, severe)
1
frowning(adjective, hard, tough, severe)
1
hang-tough(adjective, hard, tough, severe)
1
hard-boiled(adjective, hard, tough, severe)
1
hard-line(adjective, hard, tough, severe)
1
hard-nosed(adjective, hard, tough, firm)
1
hard-shell(adjective, hard, tough, severe)
1
hardheaded(adjective, hard, tough, severe)
1
mortified(adjective, hard, tough, severe)
1
mulish(adjective, hard, tough, severe)
1
obdurate(adjective, hard, tough, firm)
1
rough(adjective, bad, hard, tough)
1
serious(adjective, hard, tough, severe)
1
severe(adjective, hard, tough, harsh)
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APASmart Define. (2016). hard-core thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard-core/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard-core thesaurus" https://smartdefine.org/hard-core/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, hard-core thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard-core/thesaurus/synonyms>.
MLASmart Define. "hard-core thesaurus" 28 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard-core/thesaurus/synonyms>