'bachelorize' originates from Modern English, specifically the word 'bachelor' combined with the suffix '-ize', where 'bachelor' ultimately comes from Old French 'bacheler' meaning 'young man, novice' and the suffix '-ize' (from Greek '-izein' via Latin/French) meant 'to make or render'.

'bachelorize' developed by combining the noun 'bachelor' (Middle English/Old French 'bacheler') with the productive English verb-forming suffix '-ize'; over time this formation yielded the modern verb 'bachelorize' meaning 'to make into a bachelor' or 'to adapt for bachelors'.

Initially, 'bachelor' meant 'young man' or 'novice', but with the addition of '-ize' the compound verb came to mean 'to make into a bachelor' or more broadly 'to adapt for bachelorhood/for single people'.