from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In a traitorous manner; treacherously.
from The Century Dictionary and Cyclopedia
- In a traitorous manner; in violation of allegiance and trust; treacherously; perfidiously.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a disloyal and faithless manner
Sorry, no etymologies found.