Antonyms of adj sluttish

2 senses of sluttish

Sense 1
blowsy, blowzy, slatternly, sluttish -- (characteristic of or befitting a slut or slattern; used especially of women)

INDIRECT (VIA untidy) -> tidy -- (marked by order and cleanliness in appearance or habits; "a tidy person"; "a tidy house"; "a tidy mind")

Sense 2
easy, light, loose, promiscuous, sluttish, wanton -- (casual and unrestrained in sexual behavior; "her easy virtue"; "he was told to avoid loose (or light) women"; "wanton behavior")

INDIRECT (VIA unchaste) -> chaste -- (morally pure (especially not having experienced sexual intercourse); "a holy woman innocent and chaste")

Similarity of adj sluttish

2 senses of sluttish

Sense 1
blowsy, blowzy, slatternly, sluttish -- (characteristic of or befitting a slut or slattern; used especially of women)
       => untidy (vs. tidy) -- (not neat and tidy; "careless and untidy in her personal habits"; "an untidy living room"; "untidy and casual about money")

Sense 2
easy, light, loose, promiscuous, sluttish, wanton -- (casual and unrestrained in sexual behavior; "her easy virtue"; "he was told to avoid loose (or light) women"; "wanton behavior")
       => unchaste (vs. chaste) -- (not chaste; "unchaste conduct")