'frequently-modified' originates from the combination of 'frequently' and 'modified'. 'Frequently' comes from Latin 'frequentia', meaning 'crowded' or 'often', and 'modified' comes from Latin 'modificare', meaning 'to measure' or 'to limit'.

'frequently' evolved from the Latin 'frequentia' through Old French 'frequent', and 'modified' evolved from Latin 'modificare' through Old French 'modifier'.

Initially, 'frequently' meant 'often' and 'modified' meant 'to change'. The combined term 'frequently-modified' retains these meanings, indicating something that is often changed.