'formality' originates from Latin, specifically the word 'formalis,' where 'forma' meant 'shape' or 'form.'

'formalis' transformed into the French word 'formalité,' and eventually became the modern English word 'formality' through Middle English.

Initially, it meant 'the quality of being formal,' but over time it evolved into its current meaning of 'a thing done to comply with rules or customs.'