berserkly,adv.|bɜːˈsɜːklɪ| [f. berserk + -ly2.] In a berserk manner; madly. 1963Economist 28 Dec. 1318/2 It is berserkly dangerous.1967‘C. Franklin’ Death in East ii. 27 The headlamps illuminated a tree which seemed to be leaping berserkly towards her.