adj.
(fiercer, fiercest)
violent or aggressive; ferocious.
▸intense:
fierce opposition.
▸(of a mechanism) having a powerful abruptness of action.
Phrase
- something fierce
N. Amer. informal to a great extent.
Derivative
- fiercely adv.
- fierceness n.
Etymology
ME: from OFr. fiers ‘fierce, brave’, from L. ferus ‘untamed’.