'non-client' originates from the prefix 'non-' meaning 'not' and the word 'client,' which comes from Latin 'cliens,' meaning 'follower' or 'dependent.'

'cliens' transformed into the Old French word 'client,' and eventually became the modern English word 'client.' The prefix 'non-' was added to form 'non-client.'

Initially, 'client' meant 'follower' or 'dependent,' but over time it evolved to mean 'a person or organization using the services of a lawyer or other professional person or company.' 'Non-client' simply denotes the absence of this relationship.