unteach
/ʌnˈtitʃ/
verb
- To make someone forget or stop believing something they have learned, especially something incorrect or harmful.
- The new coach had to unteach the bad habits the players had picked up from their previous trainer.
- She spent months trying to unteach her students the idea that math is only about memorizing formulas.
- It is often harder to unteach a misconception than to teach a new concept from scratch.