sluttish
1. [ adjective ] used especially of women
Synonyms: blowzy slatternly blowsy
Related terms: untidy
2. [ adjective ] (sexuality) casual and unrestrained in sexual behavior
Synonyms: light loose promiscuous wanton easy
Examples:

"her easy virtue" "he was told to avoid loose (or light) women" "wanton behavior"

Related terms: unchaste