'excitable' originates from Latin, specifically the word 'excitabilis,' where 'excitare' meant 'to rouse or stir up.'

'excitabilis' transformed into the Old French word 'excitable,' and eventually became the modern English word 'excitable.'

Initially, it meant 'capable of being excited,' but over time it evolved into its current meaning of 'easily excited or emotionally aroused.'