The Oxford Thesaurus An A-Z Dictionary of Synonyms - expense n.

1) Often, expenses. payment, costs, outlay, outgoings, disbursement, expenditure, spending, out-of-pocket (expenses) ; cost, price, charge, fee, rate: Keep your expenses to a minimum. Expenses for travel and entertainment will be reimbursed by the company. 2) detriment, sacrifice, cost, loss, impairment, ruin, destruction: They continue to smoke at the expense of their health.