'jargon-filled' originates from the English word 'jargon,' which comes from the Old French word 'jargon,' meaning 'chatter' or 'gibberish.'

'jargon' changed from the Old French word 'jargon' and eventually became the modern English word 'jargon.'

Initially, it meant 'chatter or gibberish,' but over time it evolved into its current meaning of 'specialized language used by a particular group.'