'gamut' originates from Medieval Latin, specifically the word 'gamma ut', where 'gamma' referred to the Greek letter used in music notation and 'ut' was the first note of the scale.

'gamma ut' transformed into the Old French word 'gamut', and eventually became the modern English word 'gamut'.

Initially, it referred to the musical scale, but over time it evolved into its current meaning of 'complete range or scope'.