'asexualize' originates from modern English, specifically formed from the adjective 'asexual' plus the verb-forming suffix '-ize'. The element 'a-' in 'asexual' comes from Greek (alpha privative) meaning 'not', and 'sexual' comes from Latin 'sexus' meaning 'sex'.

'asexualize' was formed in modern English by attaching the productive suffix '-ize' (from French/Greek via Latin) to 'asexual' (from Late Latin/Greek roots). 'Asexual' itself comes from Greek prefix 'a-' + Latin-derived 'sexual' (from 'sexus').

Initially the roots expressed 'not' (a-) and 'sex' (sexus); combined and extended with '-ize' the verb came to mean 'to render or make non-sexual', and this basic meaning has carried into the modern adjective 'asexualized' meaning 'made non-sexual'.