Antonyms of adj virtuous

2 senses of virtuous

Sense 1
virtuous (vs. wicked) -- (morally excellent)

wicked (vs. virtuous) -- (morally bad in principle or practice)
        => evil, vicious -- (having the nature of vice)
        => heavy -- ((of an actor or role) being or playing the villain; "Iago is the heavy role in `Othello'")
        => flagitious, heinous -- (extremely wicked, deeply criminal; "a flagitious crime"; "heinous accusations")
        => iniquitous, sinful, ungodly -- (characterized by iniquity; wicked because it is believed to be a sin; "iniquitous deeds"; "he said it was sinful to wear lipstick"; "ungodly acts")
        => irreclaimable, irredeemable, unredeemable, unreformable -- (insusceptible of reform; "vicious irreclaimable boys"; "irredeemable sinners")
        => nefarious, villainous -- (extremely wicked; "nefarious schemes"; "a villainous plot"; "a villainous band of thieves")
        => peccable, peccant -- (liable to sin; "a frail and peccable mortal"- Sir Walter Scott)

Sense 2
pure, vestal, virgin, virginal, virtuous -- (in a state of sexual virginity; "pure and vestal modesty"; "a spinster or virgin lady"; "men have decreed that their women must be pure and virginal")

INDIRECT (VIA chaste) -> unchaste -- (not chaste; "unchaste conduct")

Similarity of adj virtuous

2 senses of virtuous

Sense 1
virtuous (vs. wicked) -- (morally excellent)
       => impeccable -- (not capable of sin)
       => impeccant, innocent, sinless -- (free from sin)
          Also See-> chaste#1; good#3; moral#1; pious#1; righteous#1

Sense 2
pure, vestal, virgin, virginal, virtuous -- (in a state of sexual virginity; "pure and vestal modesty"; "a spinster or virgin lady"; "men have decreed that their women must be pure and virginal")
       => chaste (vs. unchaste) -- (morally pure (especially not having experienced sexual intercourse); "a holy woman innocent and chaste")