'emotionless' originates from the word 'emotion' combined with the suffix '-less', where 'emotion' comes from Latin 'emovere', meaning 'to move out'.

'emotion' transformed from the Old French word 'emouvoir', and eventually became the modern English word 'emotion'.

Initially, it meant 'to move out or stir up', but over time it evolved into its current meaning of 'a feeling or state of mind'.