Definition of unlearn verb from the Oxford Advanced Learner's Dictionary

 

unlearn

 verb
verb
BrE BrE//ˌʌnˈlɜːn//
 
; NAmE NAmE//ˌʌnˈlɜːrn//
 
Verb Forms present simple I / you / we / they unlearn
BrE BrE//ˌʌnˈlɜːn//
 
; NAmE NAmE//ˌʌnˈlɜːrn//
 
he / she / it unlearns
BrE BrE//ˌʌnˈlɜːnz//
 
; NAmE NAmE//ˌʌnˈlɜːrnz//
 
past simple unlearned
BrE BrE//ˌʌnˈlɜːnd//
 
; NAmE NAmE//ˌʌnˈlɜːrnd//
 
past participle unlearned
BrE BrE//ˌʌnˈlɜːnd//
 
; NAmE NAmE//ˌʌnˈlɜːrnd//
 
-ing form unlearning
BrE BrE//ˌʌnˈlɜːnɪŋ//
 
; NAmE NAmE//ˌʌnˈlɜːrnɪŋ//
 
 
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unlearn something to deliberately forget something that you have learned, especially something bad or wrong You'll have to unlearn all the bad habits you learned with your last piano teacher.
See the Oxford Advanced American Dictionary entry: unlearn