'non-interference' originates from the prefix 'non-' meaning 'not' and the word 'interference' from Latin 'interferre', where 'inter-' meant 'between' and 'ferre' meant 'to carry'.

'interferre' transformed into the French word 'interférer', and eventually became the modern English word 'interference', with 'non-' added to denote absence.

Initially, it meant 'not carrying between', but over time it evolved into its current meaning of 'not interfering in affairs'.