'dye-proof' originates from the combination of 'dye,' which comes from Old English 'dēag,' meaning 'color,' and 'proof,' from Old French 'prova,' meaning 'test' or 'trial.'

'dye' changed from the Old English word 'dēag' and 'proof' from the Old French word 'prova,' eventually forming the modern English word 'dye-proof.'

Initially, 'dye' meant 'color,' and 'proof' meant 'test,' but over time, 'dye-proof' evolved to mean 'resistant to dye.'