1. in a manner lacking sexual purity or moral restraint
Usage: formal; often considered archaic

Examples

• The novel’s characters were criticized for behaving unchastely.
• In Victorian literature, women who acted unchastely faced social consequences.
• The moral reformers condemned those who lived unchastely.
• Religious texts often warned against thinking or acting unchastely.
• The community shunned anyone who was perceived to conduct themselves unchastely.