'depoeticize' originates from English, specifically formed from the prefix 'de-' (from Latin), the adjective 'poetic' (from Latin 'poeticus' via French/Latin), and the verb-forming suffix '-ize' (from Greek/Latin influence), where 'de-' meant 'remove' or 'reverse' and '-ize' meant 'make or cause to be'.

'poetic' comes from Latin 'poeticus', from Greek 'poietikos' (from 'poiein' meaning 'to make'); the modern English verb 'poeticize' developed by adding '-ize' to 'poetic', and 'depoeticize' formed later by prefixing 'de-' to mean 'remove poetic qualities'; the adjective/past form 'depoeticized' is the regular past participle form.

Initially, components meant 'to make' (poietikos/poetic) and 'remove' (de-); over time the composite English formations have come to mean 'to remove poetic qualities' and the past/adjective form 'depoeticized' denotes something that has been made less poetic.