'organised' originates from Middle French, specifically the word 'organiser', from Medieval Latin 'organizare', which ultimately traces back to Greek 'organon', where 'organon' meant 'tool, instrument'.

'organiser' in Middle French transformed into Early Modern English 'organise/organize', and the past participle/adjective form became 'organised/organized' in modern English.

Initially, it meant 'to furnish with organs or instruments; to arrange systematically', and over time it settled into the modern sense of 'to arrange, structure, or coordinate; to be orderly'.