at someone's expense

US /æt ˈsʌm.wʌnz ɪkˈspɛns/
UK /æt ˈsʌm.wʌnz ɪkˈspɛns/
"at someone's expense" picture
1.

paid for by someone; causing loss or damage to someone

:
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The company party was held at the company's expense.
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He made a joke at her expense, which made her feel uncomfortable.
:
expensiveexpenseat the expense ofaccrued expenseoperating expenseinterest expenseexpense account