'frustratedly' originates from the Latin word 'frustrari,' where 'frustra' meant 'in vain' or 'without effect.'

'frustrari' transformed into the Old French word 'frustrer,' and eventually became the modern English word 'frustrate,' from which 'frustratedly' is derived.

Initially, it meant 'to deceive or disappoint,' but over time it evolved into its current meaning of 'to feel annoyed or upset due to obstacles.'