from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To cause to become unfashionable or obsolete.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To render no longer fashionable.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make unfashionable, outdated, or obsolete
out- + mode (Wiktionary)