155 entries under harsh topic. ×

2
austere(adjective, appearance, hard, severe)
2
bitter(adjective, evil, nasty, unpleasant)
2
demanding(adjective, tough, severe, rough, difficult)
2
depraved(adjective, evil, nasty, corrupt)
2
dogged(adjective, appearance, terrible, cruel)
2
forbidding(adjective, person, appearance, hard, tough)
2
hurtful(adjective, mean, severe, unpleasant)
2
rancorous(adjective, mean, evil, nasty)
2
rigorous(adjective, hard, tough, difficult)
2
shameless(adjective, hard, tough, evil)
2
sinful(adjective, evil, nasty, corrupt)
2
strict(adjective, hard, rough, cruel)
2
terrible(adjective, appearance, hard, severe, rough)
2
unstoppable(adjective, cruel, determined, fierce)
2
virulent(adjective, evil, nasty, vicious)
2
wicked(adjective, evil, nasty, corrupt)
1
arduous(adjective, tough, severe, rough, difficult)
1
avaricious(adjective, hard, tough, cruel)
1
backbreaking(adjective, tough, severe, rough, difficult)
1
bound(adjective, cruel, determined, fierce)
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APASmart Define. (2016). merciless thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 30 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>