'unprogrammed' originates from the prefix 'un-' meaning 'not' and the word 'programmed', which comes from the Greek word 'programma', meaning 'a written public notice'.

'programmed' changed from the Greek word 'programma' to the Latin 'programma', and eventually became the modern English word 'programmed'.

Initially, 'programmed' meant 'a written public notice', but over time it evolved into its current meaning of 'planned or scheduled'.