'adumbratively' originates from Latin, specifically the word 'adumbrativus,' where 'ad-' meant 'toward' and 'umbra' meant 'shadow.'

'adumbrativus' transformed into the English word 'adumbrative,' and eventually became the modern English word 'adumbratively.'

Initially, it meant 'to cast a shadow or foreshadow,' but over time it evolved into its current meaning of 'suggesting something in a vague or shadowy way.'