Entry 1 sense Webster, 1913 Unbe /(ŭn*bē")/ · Un·be · IPA 01 v. t. To cause not to be; to cause to be another. 1. To cause not to be; to cause to be another.[Obs. & R.] “How oft, with danger of the field beset, Or with home mutinies, would he unbe Himself!” — Old Play.