from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To put (something learned) out of the mind; forget.
- transitive v. To undo the effect of; put aside the practice of: tried to unlearn his habit of nail-biting.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To discard the knowledge of.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To forget, as what has been learned; to lose from memory; also, to learn the contrary of.
- transitive v. To fail to learn.
from The Century Dictionary and Cyclopedia
- To discard, put away, or get rid of (what one has learned); forget the knowledge of.
- To fail to learn; not to learn.
- To put away acquired knowledge; become ignorant.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. try to forget; put out of one's memory or knowledge
- v. discard something previously learnt, like an old habit
From un- + learn. (Wiktionary)