VILLAINOUS

nefarious, villainous

(adjective) extremely wicked; “nefarious schemes”; “a villainous plot”; “a villainous band of thieves”

Source: WordNet® 3.1

Etymology

Adjective

villainous (comparative more villainous, superlative most villainous)

Of, relating to, or appropriate to a villain.

Wicked, offensive, or reprehensible in nature or behaviour; nefarious.

Source: Wiktionary

Vil"lain*ous, a. Etym: [Written also villanous.]

1. Base; vile; mean; depraved; as, a villainous person or wretch.

2. Proceeding from, or showing, extreme depravity; suited to a villain; as, a villainous action.

3. Sorry; mean; mischievous; -- in a familiar sense. "A villainous trick of thine eye." Shak. Villainous judgment (O. E. Law), a judgment that casts reproach on the guilty person. --- Vil"lain*ous*ly, adv. Vil"lain*ous*ness, n.

Source: Webster’s Unabridged Dictionary 1913 Edition