92 entries under severe topic. ×

3
exacting(adjective, hard, tough, rough)
3
hardened(adjective, person, hard, tough)
3
punitive(adjective, harsh, cruel, reactive)
3
thick-skinned(adjective, hard, tough, cruel)
2
austere(adjective, appearance, hard, harsh)
2
demanding(adjective, tough, rough, difficult)
2
distressing(adjective, tough, rough, difficult)
2
hurtful(adjective, mean, harsh, unpleasant)
2
icy(adjective, hard, tough, cold)
2
terrible(adjective, appearance, hard, rough)
1
anesthetized(adjective, hard, tough, cold)
1
arduous(adjective, tough, rough, difficult)
1
asleep(adjective, hard, tough, cold)
1
backbreaking(adjective, tough, rough, difficult)
1
benumbed(adjective, hard, tough, cold)
1
burdensome(adjective, tough, rough, difficult)
1
cantankerous(adjective, hard, tough, cold)
1
churlish(adjective, hard, tough, cold)
1
cold fish(expression, adjective, hard, tough)
1
crotchety(adjective, hard, tough, cold)
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APASmart Define. (2016). merciless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>