'concur' originates from Latin, specifically the word 'concurrere,' where 'con-' meant 'together' and 'currere' meant 'to run.'

'concurrere' transformed into the Old French word 'concourre,' and eventually became the modern English word 'concur' through Middle English.

Initially, it meant 'to run together,' but over time it evolved into its current meaning of 'to agree or coincide.'