'zealously-amassed' originates from the English word 'zealous,' which comes from the Greek word 'zelos,' meaning 'ardor' or 'fervor,' and 'amass,' from the Old French 'amasser,' meaning 'to gather or accumulate.'

'zealous' changed from the Greek word 'zelos' to the Latin 'zelus,' and eventually became the modern English word 'zealous.' 'Amass' transformed from the Old French 'amasser' to the modern English 'amass.'

Initially, 'zealous' meant 'ardor' or 'fervor,' and 'amass' meant 'to gather or accumulate.' The combined term 'zealously-amassed' retains the original meanings, emphasizing enthusiastic accumulation.