twee definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Brit. affectedly clever, dainty, sweet, etc.
Origin: back-formation ; from tweet, in same sense ; from child's pronunciation of sweet
twee definition by American Heritage Dictionary
adjective Chiefly British
Overly precious or nice.
Origin: Alteration of tweet, baby-talk alteration of sweet.