'hastily' originates from Middle English, specifically the word 'hastili,' where 'hast' meant 'speed.' 'Complete' originates from Latin, specifically the word 'completus,' where 'com-' meant 'together' and 'plere' meant 'to fill.'

'hastili' transformed into the modern English word 'hastily,' and 'completus' transformed into the modern English word 'complete.'

Initially, 'hastily' meant 'with speed,' and 'complete' meant 'to fill up,' but over time, 'hastily-completed' evolved to mean 'finished quickly, often with errors.'