66 entries under toughened topic. ×

1
unsubmissive(adjective, hard, unfeeling, unsympathetic, hardened)
1
unsusceptible(adjective, hard, careless, indifferent, cruel)
1
unsympathetic(adjective, hard, careless, indifferent, cruel)
0
casehardened(adjective, hard, unfeeling, unsympathetic, hardened)
0
hard-edged(adjective, stubborn, hardened, cynical)
0
unsentimental(adjective, tough, sharp, unfeeling, practical)
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APASmart Define. (2015). hard-bitten thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/hard-bitten/thesaurus/synonyms
ChicagoSmart Define. 2015. "hard-bitten thesaurus" https://smartdefine.org/hard-bitten/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, hard-bitten thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/hard-bitten/thesaurus/synonyms>.
MLASmart Define. "hard-bitten thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/hard-bitten/thesaurus/synonyms>