'untested' originates from the prefix 'un-' meaning 'not' and the word 'test', which comes from Latin 'testum', meaning 'an earthen pot'.

'testum' transformed into the Old French word 'test', and eventually became the modern English word 'test'.

Initially, 'test' meant 'a small vessel', but over time it evolved into its current meaning of 'a procedure intended to establish the quality, performance, or reliability of something'.