493 entries under adjective topic. ×

5
malevolent(mean, evil, nasty, harsh)
5
sanguinary(hard, tough, harsh, violent)
5
steely(cold, cruel, resolute, unfeeling)
5
unconcerned
5
unemotional(hard, tough, severe, cold)
5
unscrupulous(honest, wicked, immoral)
5
virulent(evil, nasty, harsh, vicious)
4
adamant(mean, hard, rough, harsh)
4
aloof
4
anesthetized(hard, tough, severe, cold)
4
bold
4
coarse(severe, rude, cruel, vicious)
4
coldhearted(mean, hard, severe, harsh)
4
detached(cruel, unfeeling, unsympathetic, pitiless)
4
determined(strong, harsh, cruel, fierce)
4
firm
4
flinty(evil, nasty, harsh, cruel)
4
nasty(mean, hard, severe, sharp)
4
numb(hard, tough, severe, cold)
4
persevering
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APASmart Define. (2016). ruthless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/ruthless/thesaurus/synonyms
ChicagoSmart Define. 2016. "ruthless thesaurus" https://smartdefine.org/ruthless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, ruthless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/ruthless/thesaurus/synonyms>.
MLASmart Define. "ruthless thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/ruthless/thesaurus/synonyms>