[adv] - in a nefarious manner or to a nefarious degree
nefarious, nefariously, nefariousness 1. Utterly immoral or wicked. 2. Infamous by way of being extremely wicked. 3. Extremely wicked or villainous; iniquitous; heinous, infamous; vile, atrocious.
adverb in a nefarious manner or to a nefarious degree; `nefariously involved in a conspiracy`