curstness (n.) Old form(s): curstnesse
ill humour, bad temper
AC II.ii.25.1[Lepidus to Caesar and Antony] Touch you the sourest points with sweetest terms, / Nor curstness grow to th'matter [i.e. don't let bad temper enter into it]
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL