136 entries under severe topic. ×

13
stormy(adjective, rough, intense, passionate)
13
keen(adjective, clear, strong, tough)
13
angry(adjective, state, characteristic, temper)
13
passionate(adjective, strong, keen, intense)
13
powerful(adjective, strong, great, sharp)
13
raging(adjective, harsh, intense, passionate)
13
ruthless(adjective, animal, mean, hard, tough)
12
boisterous(adjective, nasty, intense, violent)
12
relentless(adjective, animal, mean, hard, tough)
12
sharp(adjective, mean, strong, great)
12
untamed(adjective, simple, violent, wild)
11
acute(adjective, strong, great, sharp)
11
pitiless(adjective, animal, mean, hard, tough)
11
strong(adjective, strong, difficult, intense)
10
cutthroat(adjective, mean, harsh, violent)
10
impetuous(adjective, strong, difficult, intense)
9
terrible(adjective, strong, hard, great)
9
uncontrollable(adjective, hard, rough, harsh)
9
wicked(noun, adjective, mean, clear, bad)
8
grim(adjective, animal, appearance, mean, hard)
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APASmart Define. (2016). fierce thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fierce/thesaurus/synonyms
ChicagoSmart Define. 2016. "fierce thesaurus" https://smartdefine.org/fierce/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, fierce thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fierce/thesaurus/synonyms>.
MLASmart Define. "fierce thesaurus" 28 March 2016. Web. 23 September 2026. <https://smartdefine.org/fierce/thesaurus/synonyms>