'lascivious' originates from Latin, specifically the word 'lascīvus,' where 'lascīvus' meant 'wanton' or 'playful.'

'lascīvus' transformed into the Old French word 'lascivieux,' and eventually became the modern English word 'lascivious' through Middle English.

Initially, it meant 'playful or wanton,' but over time it evolved into its current meaning of 'overtly sexual or lecherous.'