'pre-planned' originates from the prefix 'pre-' meaning 'before' and the word 'plan' from Old French 'plan', which meant 'a drawing or diagram'.

'plan' changed from the Old French word 'plan' and eventually became the modern English word 'plan'.

Initially, 'plan' meant 'a drawing or diagram', but over time it evolved into its current meaning of 'a detailed proposal for doing or achieving something'.