from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Slang Very impressive; spectacular: "a special video of the best-dressed women making drop-dead, knockout entrances at parties and fashion shows in Paris and New York” ( André Leon Talley).
- adj. Slang Of or relating to a deadline that cannot be changed: a drop-dead date.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. very impressive or spectacular
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. extremely
Sorry, no etymologies found.