'adolescent' originates from Latin, specifically the word 'adolescentem,' where 'adolescere' meant 'to grow up.'

'adolescentem' transformed into the Old French word 'adolescent,' and eventually became the modern English word 'adolescent' through Middle English.

Initially, it meant 'growing up or maturing,' but over time it evolved into its current meaning of 'characteristic of youth or immaturity.'