KJV Dictionary Definition: unlearn
UNLEARN', v.t. unlern'. To forget or lose what has been learned. It is most important to us all to unlearn the errors of our early education.
I had learned nothing right; I had to unlearn everything.
2. a. Not learned; ignorant; illiterate; not instructed.
3. Not gained by study; not known.
4. Not suitable to a learned man; as unlearned verses.