'deliberately' originates from Latin, specifically the word 'deliberatus,' where 'de-' meant 'down' and 'liberare' meant 'to weigh.' 'Reveal' originates from Latin, specifically the word 'revelare,' where 're-' meant 'again' and 'velare' meant 'to cover.'

'deliberatus' transformed into the French word 'deliberer,' and eventually became the modern English word 'deliberate.' 'Revelare' transformed into the French word 'reveler,' and eventually became the modern English word 'reveal.'

Initially, 'deliberate' meant 'to weigh or consider carefully,' and 'reveal' meant 'to uncover or disclose.' These meanings have largely remained the same in modern usage.