No, it is an adjective.
They were very virtuous with their life during the past.
The man was good and virtuous. Virtuous were the deeds of Abraham Lincoln. Hester Prynne was not a very virtuous woman.
The opposite of "nefarious" (wicked or evil) would be good, honorable, virtuous, decent, or upright.
Virtuous
In Danish : virtuous
Honorable.
She considered herself very virtuous because she neither drank nor smoked
Vertious is a common misspelling of the word virtuous. A person who has high moral standards is considered virtuous. Some synonyms for virtuous are pure, good, ethical, and principled.
Saint
The word that means morally right is "virtuous."
Chaste Moral Righteous Honest
Virtuous or righteous.