| unteach | (v) cause to disbelieve; teach someone the contrary of what he or she had learned earlier |
| unteach | (v) cause to unlearn, Example: teach somebody to unlearn old habits or methods |
| Unteach | v. t. [ 1st pref. un- + teach. ] [ 1913 Webster ] Experience will unteach us. Sir T. Browne. [ 1913 Webster ] One breast laid open were a school |