'conversationally' originates from the Latin word 'conversari', where 'con-' meant 'with' and 'versari' meant 'to turn or to engage'.

'conversari' transformed into the Old French word 'converser', and eventually became the modern English word 'conversation' through Middle English.

Initially, it meant 'to engage in conversation', but over time it evolved into its current meaning of 'relating to conversation'.