fierce (adj.) 2
wild, lively, violent
H8 I.i.54 [Buckingham to Norfolk, of Wolsey] What had he / To do in these fierce vanities?
MND IV.i.68 [Oberon to Puck, of the Athenians] May all to Athens back again repair / And think no more of this night's accidents / But as the fierce vexation of a dream