from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In a pernicious manner.
from The Century Dictionary and Cyclopedia
- In a pernicious or hurtful manner; destructively; with ruinous tendency or effect.
- Maliciously; malignantly.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a noxiously baneful way
- adv. in a harmfully insidious manner
pernicious + -ly (Wiktionary)