2
stewing
2
sullen(adjective, severe, nasty, hostile, resentful)
2
unappeasable(adjective, mean, harsh, cruel, vicious)
2
uncompromising(adjective, cruel, pitiless, merciless, ruthless)
2
unfeeling(adjective, mean, tough, evil, nasty)
2
unmerciful(adjective, mean, harsh, cruel, vicious)
2
vindicatory
2
vitriolic(adjective, mean, severe, nasty, hostile)
1
acerb
1
acerbate
1
acidic
1
acidulent
1
acidulous
1
adverse(adjective, mean, nasty, unfriendly, hateful)
1
alien(adjective, mean, nasty, unfriendly, hateful)
1
allergic(mean, nasty, unfriendly, angry, antagonistic)
1
anti(adjective, mean, nasty, unfriendly, hateful)
1
antipathetic
1
argumentative(adjective, mean, nasty, unfriendly, hateful)
1
attitude
11 years ago|5.4k views|share |citing 
APASmart Define. (2015). rancorous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/rancorous/thesaurus/synonyms
ChicagoSmart Define. 2015. "rancorous thesaurus" https://smartdefine.org/rancorous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, rancorous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/rancorous/thesaurus/synonyms>.
MLASmart Define. "rancorous thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/rancorous/thesaurus/synonyms>