at sb's expense
► paid for by someone: »
They are living an extravagant lifestyle at the taxpayer's expense.
»If you lose your ticket, you will have to buy another at your own expense.
Main Entry: ↑expense
Financial and business terms. 2012.
They are living an extravagant lifestyle at the taxpayer's expense.
»If you lose your ticket, you will have to buy another at your own expense.
Financial and business terms. 2012.