musn't

Contraction

 * 1) * Thomas Dibdin, Guilty or Not Guilty
 * Nay, Sir, you musn't mind it &mdash; it's quite a common thing in our parish
 * 1) * Mark Twain, Huckleberry Finn
 * So I said it wouldn’t be no use to try to play it any longer, and I would just make a clean breast and tell her everything, but she musn't go back on her promise.
 * So I said it wouldn’t be no use to try to play it any longer, and I would just make a clean breast and tell her everything, but she musn't go back on her promise.