'hypocritically' originates from English, specifically from the adjective 'hypocritical' + the adverbial suffix '-ly'. 'Hypocritical' itself was formed in English from Latin and Greek roots.

'hypocritical' came into English via Late Latin 'hypocriticālis' and Old French forms, ultimately from Latin 'hypocrita' and Greek 'hypokritēs' (ὑποκριτής). The Greek 'hypokritēs' originally meant 'an actor' or 'one who answers', and this developed into the sense of someone who 'pretends' or 'dissembles'; English later added '-ly' to create 'hypocritically'.

Initially it referred to an 'actor' or 'stage performer' (one who replies or interprets); over time the sense shifted to 'one who pretends' or 'a dissembler,' and the modern adverb means 'in a hypocritical manner' (pretending to have virtues one does not possess).