'geniality' originates from Latin, specifically the word 'genialis,' where 'genius' meant 'spirit' or 'guardian spirit.'

'genialis' transformed into the French word 'génialité,' and eventually became the modern English word 'geniality' through Middle English.

Initially, it meant 'pertaining to marriage or generation,' but over time it evolved into its current meaning of 'friendly and cheerful manner.'