40 entries under indifferent topic. ×

11
obdurate(adjective, hard, tough, careless)
7
hard(adjective, tough, harsh, careless)
6
hardened(adjective, hard, tough, harsh, careless)
4
insensitive(adjective, hard, tough, harsh, careless)
1
apathetic(adjective, hard, careless, cruel)
1
blind to(expression, adjective, hard, careless)
1
careless(adjective, hard, cruel, apathetic)
1
case-hardened(adjective, hard, careless, cruel)
1
cold(adjective, hard, careless, cruel)
1
cold-blooded(adjective, hard, careless, cruel)
1
cruel(adjective, hard, tough, harsh, careless)
1
deaf to(expression, adjective, hard, careless)
1
hard-bitten(adjective, hard, tough, careless)
1
hard-boiled(adjective, hard, careless, cruel)
1
hardhearted(adjective, hard, careless, cruel)
1
heartless(adjective, hard, careless, cruel)
1
impassive(adjective, hard, careless, cruel)
1
indurated(adjective, hard, careless, cruel)
1
inflexible(adjective, hard, careless, cruel)
1
insensate(adjective, hard, careless, cruel)
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APASmart Define. (2015). impenitent thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impenitent/thesaurus/synonyms
ChicagoSmart Define. 2015. "impenitent thesaurus" https://smartdefine.org/impenitent/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impenitent thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impenitent/thesaurus/synonyms>.
MLASmart Define. "impenitent thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impenitent/thesaurus/synonyms>