from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In a way that will cause ruin.
from The Century Dictionary and Cyclopedia
- In a ruinous manner; destructively.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a ruinous manner or to a ruinous degree
ruinous + -ly (Wiktionary)