'flaccidity' originates from Latin, specifically the word 'flacciditas,' where 'flaccidus' meant 'flabby or limp.'

'flacciditas' transformed into the French word 'flaccidité,' and eventually became the modern English word 'flaccidity' through Middle English.

Initially, it meant 'flabby or limp,' but over time it evolved into its current meaning of 'soft and limp; lacking firmness or stiffness.'