'agonizing' originates from the Greek word 'agōnizesthai,' where 'agōn' meant 'contest' or 'struggle.'

'agōnizesthai' transformed into the Latin word 'agonizare,' and eventually became the modern English word 'agonize' through Middle English.

Initially, it meant 'to struggle or compete,' but over time it evolved into its current meaning of 'causing great pain or distress.'