'articulacy' originates from Latin, specifically the word 'articulatus,' where 'articulare' meant 'to divide into joints or to utter distinctly.'

'articulatus' transformed into the English word 'articulate,' and eventually became the modern English word 'articulacy.'

Initially, it meant 'to utter distinctly,' but over time it evolved into its current meaning of 'the ability to express oneself fluently and coherently.'