86 entries under harsh topic. ×

1
intolerant(adjective, hard, tough, cruel)
1
merciless(adjective, hard, tough, grim)
1
misanthropic(adjective, tough, nasty, cold)
1
murderous(adjective, hard, tough, cruel)
1
pitiless(adjective, hard, tough, severe)
1
relentless(adjective, hard, tough, severe)
1
rigorous(adjective, hard, tough, cruel)
1
ruthless(adjective, hard, tough, severe)
1
sanguinary(adjective, hard, tough, cruel)
1
savage(adjective, hard, tough, cruel)
1
shameless(adjective, hard, tough, evil, rough)
1
snappy(strong, tough, sharp, powerful)
1
tough(adjective, hard, severe, nasty)
1
tyrannical(adjective, hard, tough, cruel)
1
uncontrite(adjective, hard, tough, cruel)
1
unforgiving(adjective, hard, tough, cruel)
1
unmerciful(adjective, hard, tough, cruel)
1
unregenerate(adjective, hard, tough, cruel)
1
unremitting(adjective, hard, tough, cruel)
1
unrepenting(adjective, hard, tough, cruel)
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APASmart Define. (2016). sour thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sour/thesaurus/synonyms
ChicagoSmart Define. 2016. "sour thesaurus" https://smartdefine.org/sour/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sour thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sour/thesaurus/synonyms>.
MLASmart Define. "sour thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/sour/thesaurus/synonyms>