2 [uncountable] the high cost of something
A powerful computer is worth the expense if you use it regularly.
expense of: the expense and inconvenience of recovering cargo from sunken ships
go to great/considerable etc expense (=spend a lot of money): His parents went to great trouble and expense to make sure the party was a success.
go to the expense of doing something (=spend money on doing something): We didn’t want to go to the expense of sending a courier.
put someone to the expense of doing something (=make someone spend money on doing something): That little mistake put us to the expense of reprinting the whole book.
Synonyms and related words