From Longman Dictionary of Contemporary Englishunlearnun‧learn /ʌnˈlɜːn $ -ɜːrn/ verb (past tense and past participle unlearned or unlearnt /-ˈlɜːnt $ -ˈlɜːrnt/) [transitive] informalFORGET to deliberately forget something you have learned, in order to change the way you do something It’s difficult to unlearn bad driving habits.→ See Verb table
Examples from the Corpus
unlearn• Every great inventor or scientist has had to unlearn conventional wisdom in order to proceed with his work.• As such it seems particularly appropriate for a time of rapid change and the need to unlearn dogmatism.• What I learned from them specifically of the techniques of teaching I have had to do my best to unlearn since.• It could also be a forgetting term, when a system needs to unlearn something.• Who do you go to to unlearn them? 