Synonyms for Sluttish (same or very similar meaning)
WordNet sense 1 (characteristic of or befitting a slut or slattern; used especially of women):
blowsy, blowzy, slatternlyWordNet sense 2 (not neat and tidy):
untidyWordNet sense 3 (casual and unrestrained in sexual behavior):
easy, light, loose, promiscuous, wantonWordNet sense 4 (not chaste):
unchasteFrom the ODE community, based on WordNetadd/edit