47 entries under heartless topic. ×

2
remorseless(adjective, mean, severe, harsh, violent)
2
severe(adjective, mean, harsh, violent, cruel)
2
unfeeling(adjective, mean, rough, harsh, cruel)
2
unforgiving(adjective, mean, harsh, cruel, vicious)
2
unmerciful(adjective, mean, harsh, violent, cruel)
1
adamant(adjective, mean, harsh, cruel, vicious)
1
cold(adjective, mean, hard, harsh, cruel)
1
dog-eat-dog(adjective, mean, severe, harsh, cruel)
1
hard-hearted(adjective, mean, severe, harsh, cruel)
1
implacable(adjective, mean, harsh, violent, cruel)
1
ironfisted(adjective, mean, severe, harsh, cruel)
1
killer(adjective, mean, severe, harsh, cruel)
1
malevolent(adjective, mean, strong, severe, harsh)
1
relentless(adjective, mean, strong, severe, harsh)
1
revengeful(adjective, mean, harsh, cruel, vicious)
1
stern(adjective, mean, severe, harsh, violent)
1
stony(adjective, mean, severe, harsh, cruel)
1
surly(adjective, mean, severe, harsh, cruel)
1
without pity(expression, adjective, mean, severe, harsh)
0
inexorable(adjective, mean, harsh, cruel, vicious)
11 years ago|10k views|share |citing 
APASmart Define. (2015). feral thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/feral/thesaurus/synonyms
ChicagoSmart Define. 2015. "feral thesaurus" https://smartdefine.org/feral/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, feral thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/feral/thesaurus/synonyms>.
MLASmart Define. "feral thesaurus" 17 July 2015. Web. 29 September 2026. <https://smartdefine.org/feral/thesaurus/synonyms>