- of a violently cruel nature; savage; wild: a fierce dog
- violent; uncontrolled: a fierce storm
- intensely eager; intense; ardent: a fierce embrace
- Informal very distasteful, disagreeable, bad, etc.
Origin of fierceMiddle English fers from Old French fers, fier from Classical Latin ferus, wild, savage from Indo-European base an unverified form ?hwer-, wild animal from source Classical Greek th?r, animal