'nervousness' originates from the Latin word 'nervosus,' where 'nervus' meant 'sinew' or 'nerve.'

'nervosus' transformed into the Old French word 'nervos,' and eventually became the modern English word 'nervousness' through Middle English.

Initially, it meant 'having strong sinews or nerves,' but over time it evolved into its current meaning of 'anxious or apprehensive state.'