'consistent' originates from Latin, specifically the word 'consistere,' where 'con-' meant 'together' and 'sistere' meant 'to stand.'

'consistere' transformed into the French word 'consistant,' and eventually became the modern English word 'consistent' through Middle English.

Initially, it meant 'to stand together,' but over time it evolved into its current meaning of 'acting in the same way over time.'