'deliberate' originates from Latin, specifically the word 'deliberatus,' where 'de-' meant 'down' and 'liberare' meant 'to weigh.' 'Execute' originates from Latin, specifically the word 'executus,' where 'ex-' meant 'out' and 'sequi' meant 'to follow.'

'deliberatus' transformed into the French word 'deliberer,' and eventually became the modern English word 'deliberate' through Middle English. 'Executus' transformed into the French word 'executer,' and eventually became the modern English word 'execute.'

Initially, 'deliberate' meant 'to weigh or consider,' and 'execute' meant 'to follow out.' Over time, 'deliberate' evolved to mean 'intentional,' and 'execute' evolved to mean 'to carry out or perform.'