unlearn

Definition of Unlearn in English :

1. unlearn

try to forget; put out of one's memory or knowledge

2. unlearn

discard something previously learnt, like an old habit

WordNet Lexical Database for English. Princeton University. 2010.

Unlearn

verb -learns, -learning, -learned (-ˈlɜːnd) or -learnt

to try to forget (something learnt) or to discard (accumulated knowledge)

verb transitive, verb intransitive

to forget or try to forget (something learned); get rid of (a habit)

tr.v. un·learned also un·learnt (-lûrnt), un·learn·ing, un·learns

1. To put (something learned) out of the mind; forget.

2. To undo the effect of; put aside the practice of: tried to unlearn his habit of nail-biting.