1. chaste (vs. unchaste), celibate, continent, pure, vestal, virgin, virginal, virtuous, moral, pure, virtuous

usage: morally pure (especially not having experienced sexual intercourse); "a holy woman innocent and chaste"

2. chaste, plain (vs. fancy)

usage: pure and simple in design or style; "a chaste border of conventionalized flowers"

3. chaste, moral (vs. immoral)

usage: abstaining from unlawful sexual intercourse

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See also: chaste (Dictionary)