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

'affectare' transformed into the Old French word 'affecter,' and eventually became the modern English word 'affect' with the suffix '-able' added to form 'affectable.'

Initially, it meant 'to strive after or aim at,' but over time it evolved into its current meaning of 'capable of being affected.'