'indistinctly-divided' originates from the Latin word 'indistinctus,' where 'in-' meant 'not' and 'distinctus' meant 'separated.'

'indistinctus' transformed into the Old French word 'indistinct,' and eventually became the modern English word 'indistinctly' through Middle English.

Initially, it meant 'not separated,' but over time it evolved into its current meaning of 'not clearly separated or distinguished into parts.'