slutishness noun2 •(vulgar) The state or quality of being sluttish (like a slut; sexually promiscuous).Before long, the wife begins to reveal her sluttishness and, by the time the play is over, she has arranged a satisfactory financial and sexual deal with her in-laws. — 1971 •(old-fashioned) The state or quality of being sluttish (dirty or untidy; disorderly).Well, praised be the Gods, for thy foulnesse; sluttishnesse may come heereafter. — 1598