'nonintervention' originates from Latin, specifically the word 'intervenire,' where 'inter-' meant 'between' and 'venire' meant 'to come.'

'intervenire' transformed into the French word 'intervenir,' and eventually became the modern English word 'intervene' through Middle English. The prefix 'non-' was added to form 'nonintervention.'

Initially, it meant 'to come between,' but over time it evolved into its current meaning of 'not becoming involved in affairs.'