'unsafe' originates from the prefix 'un-' meaning 'not' and the word 'safe', which comes from Old French 'sauf', from Latin 'salvus' meaning 'uninjured'.

'safe' changed from the Old French word 'sauf' and eventually became the modern English word 'safe'.

Initially, 'safe' meant 'uninjured', but over time it evolved into its current meaning of 'free from harm or risk'.