Nefarious adv. : Wicked in the extreme; abominable; iniquitous; atrociously villainous; execrable; detestably vile.

Example:
Do republicans really believe all these conspiracy theories and Nefarious motives put on Democrats?

Taxonomy
nefarious, Dictionary, Synonyms, adjective, word origin, Nefarious clothing, Nefarious pickle, ness, crime, Indo-European roots, Houghton Mifflin Company, free online English dictionary, iniquitous, dictionary results, pronunciation, moral law, ly adv, free online dictionary.

Defination from the web:
Nefarious - Definition of Nefarious at Dictionary.com a free online dictionary with pronunciation, synonyms, and translation of Nefarious. ... nefarious ... Search another word or see nefarious on Thesaurus | Reference. Facebook Twitter Follow us: ...