'frequently-advised' originates from the combination of 'frequently' and 'advised', where 'frequently' comes from Latin 'frequentia' meaning 'crowded' and 'advised' from Old French 'aviser' meaning 'to consider'.

'frequently' evolved from Latin 'frequentia' through Old French 'frequent' and 'advised' from Old French 'aviser', eventually forming the modern English compound 'frequently-advised'.

Initially, 'frequently' meant 'crowded or full' and 'advised' meant 'to consider', but over time, they evolved to mean 'often' and 'given advice', respectively.