The phrase "lady of easy virtue" is considered outdated and disrespectful. However, there are several synonyms that can be used to describe someone who is promiscuous or sexually liberal. Some of these synonyms include "loose woman," "slut," "harlot," "prostitute," "whore," "courtesan," "call girl," and "kept woman." While these terms are still considered pejorative, they may be used in certain contexts, such as literature or historical writing, to describe the sexual behavior of individuals. It's important to remember that using disrespectful language can perpetuate harmful stereotypes and judgments, and it's essential to treat all individuals with respect and dignity.