'accurately-modified' is a compound word formed from 'accurately' and 'modified'. 'Accurately' originates from Latin 'accuratus', meaning 'done with care', and 'modified' comes from Latin 'modificare', meaning 'to measure or limit'.

'Accuratus' transformed into the Old French 'acuratus', and eventually became the modern English word 'accurate'. 'Modificare' evolved into the Old French 'modifier', leading to the modern English 'modify'.

Initially, 'accurate' meant 'done with care', and 'modify' meant 'to measure or limit'. Over time, 'accurately-modified' came to mean 'precisely altered'.