動詞 unlearn:

1. try to forget; put out of one's memory or knowledge
   同義詞：unlearn
2. discard something previously learnt, like an old habit
   同義詞：unlearn

形容詞 unlearned:

1. not established by conditioning or learning
   同義詞：unconditioned, innate
2. not well learned
3. uneducated in general; lacking knowledge or sophistication
   同義詞：ignorant, nescient, unenlightened, unlettered

1. Our sales director is unlearned.
   我們的銷售部主任沒有文化。