1
inhuman
1
inhumane
1
insensate
1
insensitive
1
ironhearted
1
merciless
1
obdurate
1
ruthless
1
savagery
1
self-absorbed
1
severe
1
stern
1
stony
1
stonyhearted
1
tough
1
uncharitable
1
unsympathetic
0
antihumanitarian
0
austere
0
authoritarian
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APASmart Define. (2016). softhearted thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/softhearted/thesaurus/antonyms
ChicagoSmart Define. 2016. "softhearted thesaurus" https://smartdefine.org/softhearted/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, softhearted thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/softhearted/thesaurus/antonyms>.
MLASmart Define. "softhearted thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/softhearted/thesaurus/antonyms>