Expense

Noun

Template:Countable An expense is something for which you spend money. Template:Syn Template:Ant
Food is a huge expense for many people around the world.
Template:Cu noun An expense is an amount of money that you spend. Template:Syn Template:Ant
If your income is less than your expenses, you have a serious problem.

The company paid all of his expenses when he was in Shanghai.

The building was repaired at great expense.
If you do $x$ at the expense of $y$ , $x$ hurts $y$ because it makes $y$ have less money, less time, less social status, etc. Template:Syn
She often makes jokes at her own expense.

We have to decide whether safety at the expense of freedom is worth the cost.