bound (adj.)
obliged, required, forced
AC II.vi.114[Enobarbus to Menas, of Antony's marriage to Caesar's sister] If I were bound to divine of this unity
KL III.vii.10[Cornwall to Edmund, of himself and Regan] Advise the Duke where you are going to a most festinate preparation; we are bound to the like
RJ I.ii.1[Capulet to Paris] Montague is bound as well as I, / In penalty alike
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL