17
truculent(adjective, animal, mean, kind, severe)
16
inhuman(adjective, animal, mean, hard, kind)
16
turbulent(adjective, violent, property, wild, mad)
16
brutish(adjective, simple, severe, evil, nasty)
14
murderous(adjective, characteristic, hard, tough, severe)
14
fell(verb, adjective, characteristic, animal, mean)
13
bloodthirsty(adjective, characteristic, severe, evil, nasty)
13
stormy(adjective, severe, rough, intense, passionate)
13
keen(adjective, clear, strong, tough, severe)
13
angry(adjective, state, characteristic, severe, temper)
13
merciless(adjective, mean, hard, tough, evil)
13
passionate(adjective, strong, severe, keen, intense)
13
powerful(adjective, strong, great, severe, sharp)
13
raging(adjective, severe, harsh, intense, passionate)
13
ruthless(adjective, animal, mean, hard, tough)
13
tempestuous(adjective, violent, animated, heated, reckless)
12
bitter(adjective, strong, great, evil, sharp)
12
barbaric(adjective, animal, mean, simple, violent)
12
boisterous(adjective, severe, nasty, intense, violent)
12
frenzied(adjective, strong, difficult, intense, violent)
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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>