630 entries under adjective topic. ×

5
enthusiastic(strong, keen, intense, passionate)
5
formidable(great, tough, intense, heavy)
5
glowing(strong, difficult, intense, passionate)
5
heartless(mean, severe, evil, nasty)
5
inhumane(animal, mean, hard, tough)
5
malevolent(mean, severe, evil, nasty)
5
poignant(strong, evil, nasty, difficult)
5
profound(strong, great, sharp, harsh)
5
rude(mean, simple, violent, cruel)
5
scathing(hostile, bitter, malicious, belligerent)
5
tearing(distressing, disturbing, unbearable, excruciating)
5
trigger-happy
5
uproarious
5
venomous(violent, brutal, ferocious, menacing)
5
vigorous(intense, passionate, violent, fervent)
5
warlike(nasty, violent, hostile, reckless)
5
zealous(clear, strong, tough, severe)
4
animal(mean, simple, severe, violent)
4
beastly(mean, violent, wild, cruel)
4
deep(clear, strong, great, tough)
10 years ago|35k views|share |citing 
APASmart Define. (2016). fierce thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fierce/thesaurus/synonyms
ChicagoSmart Define. 2016. "fierce thesaurus" https://smartdefine.org/fierce/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, fierce thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fierce/thesaurus/synonyms>.
MLASmart Define. "fierce thesaurus" 28 March 2016. Web. 25 September 2026. <https://smartdefine.org/fierce/thesaurus/synonyms>