'advertisement-free' originates from the combination of 'advertisement' and 'free', where 'advertisement' refers to a public promotion of some product or service, and 'free' means without or lacking.

'advertisement' comes from the Latin word 'advertere', meaning 'to turn towards', and 'free' from Old English 'freo', meaning 'not in bondage'.

Initially, 'advertisement' meant 'a notice to the public', and 'free' meant 'not in bondage'. Together, 'advertisement-free' evolved to mean 'without advertisements'.