'randomize' originates from English, specifically formed by attaching the verb-forming suffix '-ize' to the adjective 'random'. 'random' itself originates from Old French, specifically the word 'randon', where 'randon' meant 'speed' or 'impulse'.

'random' changed from the Old French word 'randon' into Middle English 'random', and later English formed the verb 'randomize' (mainly in the 19th century) by adding the suffix '-ize' to create a verb meaning 'to make random'.

Initially, 'randon' meant 'speed' or 'impetuosity', but over time the sense shifted to 'lack of pattern' or 'by chance'; 'randomize' developed to mean 'to make something random' and retain that modern sense.