1
chronic
1
circumspect(adjective, close, correct, firm, honest)
1
coarse(vulgar, indecent, lewd, lustful, lascivious)
1
confiding(adjective, close, correct, firm, honest)
1
confirmed
1
conscientious(adjective, close, correct, firm, honest)
1
constant(adjective, close, correct, firm, honest)
1
continuing
1
contrary(determined, impulsive, stubborn, reckless, impetuous)
1
cruel(adjective, strong, hard, tough, severe)
1
dateless
1
deathless
1
deep-seated
1
deep in thought
1
dependable(adjective, close, correct, firm, honest)
1
disciplinary(adjective, strong, hard, tough, severe)
1
dour
1
dutiful(adjective, close, correct, firm, honest)
1
endless
1
erotic(offensive, dirty, coarse, vulgar, indecent)
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APASmart Define. (2016). hard-core thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/hard-core/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard-core thesaurus" https://smartdefine.org/hard-core/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, hard-core thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/hard-core/thesaurus/synonyms>.
MLASmart Define. "hard-core thesaurus" 28 March 2016. Web. 22 September 2026. <https://smartdefine.org/hard-core/thesaurus/synonyms>