adj. chast·er, chast·est
a. Not having experienced sexual intercourse; virginal.
b. Abstaining from sexual relations that are not sanctioned by certain religious laws or moral principles.
c. Abstaining from sexual relations; celibate.
2. Not involving or suggestive of sexual desire or indecency: a chaste kiss; a chaste conversation.
3. Pure or simple in design or style; austere.
[Middle English, from Old French, from Latin castus; see kes- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.