'acknowledgeable' originates from the English word 'acknowledge,' which comes from the Old English word 'oncnāwan,' where 'on-' meant 'on' and 'cnāwan' meant 'to know.'

'acknowledge' changed from the Old English word 'oncnāwan' and eventually became the modern English word 'acknowledge.'

Initially, it meant 'to know or recognize,' but over time it evolved into its current meaning of 'to accept or admit the existence or truth of something.'