'Casanova' originates from the name of Giacomo Casanova, an 18th-century Italian adventurer and author known for his numerous romantic exploits.

The name 'Casanova' became synonymous with a man who is a seducer of women, evolving from its original use as a proper noun.

Initially, it referred to the historical figure Giacomo Casanova, but over time it evolved into its current meaning of a man with many romantic relationships.