'anthroposophical' originates from modern English, ultimately via German 'Anthroposophie', where Greek 'anthropos' meant 'human' and Greek 'sophia' meant 'wisdom'.

'anthroposophical' derived from the noun 'anthroposophy' (English), which itself was borrowed from German 'Anthroposophie' coined in the late 19th/early 20th century; the German term was built from Greek elements 'anthropos' + 'sophia' and then adapted into English as 'anthroposophy', with the adjective formed as 'anthroposophical'.

Initially the Greek roots conveyed the literal idea of 'human wisdom'; over time the compound came to denote the specific spiritual movement 'Anthroposophy' and things 'relating to' that movement—hence the modern adjectival sense 'relating to anthroposophy'.