4
excitable(adjective, upset, intense, passionate, violent)
4
feverish(adjective, intense, violent, hot, animated)
4
fighting(adjective, nasty, violent, determined, hostile)
4
forceful(adjective, clear, strong, great, tough)
4
heated(adjective, strong, difficult, intense, passionate)
4
hellish(adjective, evil, nasty, harsh, violent)
4
hysterical(adjective, cruel, nervous, vicious, emotional)
4
infuriate(verb, resentment)
4
militant(adjective, nasty, determined, hostile, spirited)
4
offensive(adjective, wicked)
4
painful(adjective, severe, evil, sharp, nasty)
4
penetrating(adjective, strong, sharp, intense, powerful)
4
racking(strong, sharp, intense, violent, demanding)
4
roughneck
4
stabbing(strong, sharp, intense, violent, bitter)
4
uncultivated(adjective, simple, violent, wild, vicious)
4
unfeeling(adjective, animal, mean, severe, evil)
4
unpleasant(adjective, mean, bad, severe, harsh)
3
heavy(adjective, strong, harsh, intense, passionate)
3
abusive(adjective, mean, violent, vicious, hostile)
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APASmart Define. (2016). fierce thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fierce/thesaurus/synonyms
ChicagoSmart Define. 2016. "fierce thesaurus" https://smartdefine.org/fierce/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, fierce thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fierce/thesaurus/synonyms>.
MLASmart Define. "fierce thesaurus" 28 March 2016. Web. 21 September 2026. <https://smartdefine.org/fierce/thesaurus/synonyms>