'expense-focused' is a compound word formed from 'expense' and 'focused'. 'Expense' originates from Latin, specifically the word 'expensum', where 'ex-' meant 'out' and 'pendere' meant 'to weigh'. 'Focused' comes from the Latin 'focus', meaning 'hearth' or 'fireplace', which evolved to mean 'center of activity or interest'.

'Expense' changed from the Latin 'expensum' to the Old French 'espense', and eventually became the modern English word 'expense'. 'Focused' evolved from the Latin 'focus' to the modern English 'focused'.

Initially, 'expense' meant 'something weighed out', but over time it evolved into its current meaning of 'cost or charge'. 'Focused' originally referred to a 'hearth' but now means 'concentrated on a particular point'.