77 entries under rough topic. ×

46
cruel(adjective, appearance, mean, hard, tough)
42
ruthless(adjective, appearance, mean, hard, tough)
24
savage(adjective, mean, hard, tough)
23
harsh(adjective, mean, hard, tough, severe)
21
callous(adjective, person, mean, hard, tough)
21
hard(adjective, mean, tough, severe, evil)
18
unforgiving(adjective, person, mean, hard, tough)
15
vicious(adjective, mean, hard, evil)
14
barbaric(adjective, violent, cruel, vicious)
14
ferocious(adjective, mean, hard, evil)
14
fierce(adjective, mean, hard, tough, evil)
14
severe(adjective, appearance, mean, hard, tough)
12
unyielding(adjective, appearance, mean, hard, tough)
10
obdurate(adjective, person, mean, hard, tough)
10
stern(adjective, person, appearance, mean, hard)
10
tough(adjective, hard, severe, harsh)
9
uncompromising(adjective, hard, harsh, cruel)
8
inflexible(adjective, person, hard, harsh)
8
unsparing(adjective, mean, severe, difficult)
6
unbending(adjective, hard, harsh, cruel)
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APASmart Define. (2016). merciless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>