'outstandingly' originates from the word 'outstanding', which is derived from the Old English 'ūtstandan', where 'ūt-' meant 'out' and 'standan' meant 'to stand'.

'ūtstandan' transformed into the Middle English word 'outstand', and eventually became the modern English word 'outstanding'.

Initially, it meant 'to stand out', but over time it evolved into its current meaning of 'exceptionally good'.