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English definition of “fierce”

fierce

adjective uk   /fɪəs/ us    /fɪrs/
B2 physically violent and frightening: a fierce attack/battle Two men were shot during fierce fighting last weekend.Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly B2 strong and powerful: Fierce winds/seas prevented the race from taking place. Fire fighters had to retreat from the fierce heat.Physically strong and powerful B2 showing strong feeling or energetic activity: The expansion plans will face fierce opposition/resistance from environmentalists. There is fierce competition to join the Special Branch.Energetic and livelyStrong feelings US informal difficult: The chemistry exam was fierce!Complicated and difficult to doDifficult to understand
fierceness
noun [U] uk   /-nəs/ us  
Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badlyDifficult things and peoplePreventing and impeding
(Definition of fierce from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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