chaste

Short definition from Wiktionary

Adjective

1. 1
   Synonym of pure and virtuous, particularly: Sexually pure, abstaining from immoral or unlawful sexual intercourse.
2. 2
   Synonym of pure and virtuous, particularly: Synonym of celibate, abstaining from any sexual intercourse.
3. 3
   Synonym of pure and virtuous, particularly: Synonym of virginal, innocent, having or providing no sexual knowledge or experience.
4. 4
   Synonym of pure and virtuous, particularly: Synonym of modest, particularly (sexism) in reference to behavior expected of sexually pure women.
5. 5
   Synonym of pure and virtuous, particularly: Synonym of austere, plain, unextravagant, particularly demure, sexually discreet.