'normality' originates from Latin, specifically the word 'normalis,' where 'norma' meant 'a carpenter's square or rule.'

'normalis' transformed into the French word 'normalité,' and eventually became the modern English word 'normality' through Middle English.

Initially, it meant 'conforming to a rule or standard,' but over time it evolved into its current meaning of 'the state of being usual or expected.'