go to the expense of (something)

go to the expense of (something)

To do something that requires a significant amount of money, especially something unnecessary or done reluctantly. I don't think you should go to the expense of renting a hot air balloon when your girlfriend has said she just wants a quiet Valentine's Day at home.See also: expense, go, of

go to the expense of something/of doing something

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go to a lot of, etc. exˈpense

spend money on something: They went to all the expense of redecorating the house and then they moved.See also: expense, go, of, something