'exonerator' originates from Latin, specifically the word 'exonerare,' where 'ex-' meant 'out of' and 'onerare' meant 'to burden.'

'exonerare' transformed into the Medieval Latin word 'exonerator,' and eventually became the modern English word 'exonerator.'

Initially, it meant 'to relieve from a burden,' but over time it evolved into its current meaning of 'to clear from blame or fault.'