'allusory' originates from Latin, specifically the word 'allusorius,' where 'alludere' meant 'to play with' or 'to jest.'

'allusorius' transformed into the French word 'allusif,' and eventually became the modern English word 'allusory' through Middle English.

Initially, it meant 'to play with or jest,' but over time it evolved into its current meaning of 'containing indirect references.'