curst (adj.)
angry, furious, fierce
2H6 III.ii.312[Suffolk to Queen, of his curses] As curst, as harsh ... / As lean-faced Envy in her loathsome cave
KL II.i.64[Edmund to Gloucester, of Edgar] with curst speech / I threatened to discover him
Ven.887[of dogs] Finding their enemy to be so curst
WT III.iii.126[Clown to Shepherd, of bears] They are never curst but when they are hungry
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL