heady (adj.) 1
violent, weighty, raging
1H4 II.iii.57 [Lady Percy to Hotspur] thou hast talked / Of ... all the currents of a heady fight
H5 I.i.34 [Canterbury to Ely, of King Henry] Never came reformation in a flood / With such a heady currance scouring faults
H5 III.iii.32 [King Henry to citizens of Harfleur] the filthy and contagious clouds / Of heady murder, spoil, and villainy [F headly]