Origin of unlearnMiddle English unlernen: see un- and learn
transitive verbun·learned, also un·learnt un·learn·ing, un·learns
- To put (something learned) out of the mind; forget.
- To undo the effect of; put aside the practice of: tried to unlearn his habit of nail-biting.
(third-person singular simple present unlearns, present participle unlearning, simple past and past participle unlearned)
From un- +"Ž learn.