'equip' originates from French, specifically the word 'équiper,' where 'é-' meant 'out' and 'quiper' meant 'to fit or prepare.'

'équiper' transformed into the English word 'equip,' and eventually became the modern English word 'fully-equipped' through the addition of 'fully.'

Initially, it meant 'to prepare or fit out,' but over time it evolved into its current meaning of 'having all necessary equipment.'