'archaicize' originates from English, specifically formed from the adjective 'archaic' + the productive verbal suffix '-ize' (ultimately from Greek '-izein' via Latin/French), where 'archaic' traces to Greek 'arkhaîos' meaning 'ancient' and '-ize' meant 'to make or to render'.

'archaic' entered English via Latin 'archaicus' and Old French from Greek 'arkhaîos'; the modern English verb 'archaicize' was created by adding the English/learned suffix '-ize' to 'archaic', producing the sense 'to make archaic'.

Initially, related forms meant 'ancient' or 'belonging to the beginning/older times,' but over time the verb 'archaicize' evolved to mean 'to make something old-fashioned or obsolete'—applying the quality of 'archaic' to something else.