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Webster 1913 Edition

Noun.

Chastity; purity.

(Literature & Art)

Freedom from all that is meretricious, gaudy, or affected;

as,

chasteness

of design

Noun.

Chastity; purity.

chasteness ‎(usually uncountable, plural chastenesses)

The state of being chaste; chastity
- 1805 Emily Clark - The banks of the Douro
  The chasteness of her dress made her appear the allusive semblance of Purity itself
- 2005 Gocha R. Tsetskhladze - Ancient West & East
  Livia's public image and her statues portrayed her as one imbued with the qualities of moral chasteness and matronly respectability