'dependably' originates from 'depend,' which comes from Latin 'dependere,' meaning 'to hang down.' 'Manage' comes from Italian 'maneggiare,' meaning 'to handle.'

'Dependere' transformed into Old French 'dependre,' and eventually became the modern English word 'depend.' 'Maneggiare' transformed into Middle French 'managier,' and eventually became the modern English word 'manage.'

Initially, 'depend' meant 'to hang down,' but over time it evolved into its current meaning of 'to rely on.' 'Manage' initially meant 'to handle,' and this meaning has largely remained the same in modern usage.