'indescribable' originates from Latin, specifically the word 'indescribabilis,' where 'in-' meant 'not' and 'describere' meant 'to write down or describe.'

'indescribabilis' transformed into the French word 'indescriptible,' and eventually became the modern English word 'indescribable' through Middle English.

Initially, it meant 'not able to be described,' and this meaning has largely remained the same in modern usage.