'priceless' originates from Middle English, specifically the word 'priceles,' where 'price' meant 'value' and '-less' meant 'without.'

'priceles' transformed into the modern English word 'priceless' through the addition of the suffix '-less' to 'price.'

Initially, it meant 'without a price,' but over time it evolved into its current meaning of 'invaluable or extremely amusing.'