'hastily' originates from Middle English, specifically the word 'hastili,' where 'hast' meant 'speed.' 'Prepared' comes from Latin, specifically the word 'praeparare,' where 'prae-' meant 'before' and 'parare' meant 'to make ready.'

'Hastili' transformed into the modern English word 'hastily,' and 'praeparare' evolved into 'prepare' through Old French 'preparer.'

Initially, 'hastily' meant 'with speed,' and 'prepared' meant 'made ready.' Over time, 'hastily-prepared' evolved to mean 'done quickly without much thought.'