'confinement' originates from Old French, specifically the word 'confiner,' where 'con-' meant 'together' and 'finir' meant 'to end or limit.'

'confiner' transformed into the Middle English word 'confinement,' and eventually became the modern English word 'confinement.'

Initially, it meant 'to limit or restrict,' but over time it evolved into its current meaning of 'being confined or restricted within limits.'