'deconsecrate' originates from Latin, specifically the word 'deconsecrare,' where 'de-' meant 'remove' and 'consecrare' meant 'to make sacred.'

'deconsecrare' transformed into the French word 'déconsacrer,' and eventually became the modern English word 'deconsecrate' through Middle English.

Initially, it meant 'to remove sacredness,' and this meaning has largely remained the same in modern usage.