'affector' originates from Latin, specifically the word 'affectare,' where 'ad-' meant 'toward' and 'facere' meant 'to do or make.'

'affectare' transformed into the English word 'affect,' and eventually became the modern English word 'affector.'

Initially, it meant 'to strive after or aim at,' but over time it evolved into its current meaning of 'an entity that causes a change.'