'frequently-managed' originates from the combination of 'frequently' and 'managed'. 'Frequently' comes from Latin 'frequentia', meaning 'crowded' or 'numerous', and 'managed' comes from Italian 'maneggiare', meaning 'to handle'.

'frequentia' transformed into the Old French 'frequent', and eventually became the modern English word 'frequent'. 'Maneggiare' transformed into the French 'maneger', and eventually became the modern English word 'manage'.

Initially, 'frequent' meant 'crowded', but over time it evolved into its current meaning of 'occurring often'. 'Manage' initially meant 'to handle', and this meaning has largely remained the same in modern usage.