verb reduce the estimated value of something.
— synonyms: write_off, write_down
noun amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures).
— synonyms: disbursal, disbursement
noun a detriment or sacrifice.
noun money spent to perform work and usually reimbursed by an employer.
Examples
“Buying the car was a big expense, but will be worth it in the long run.”
“Jones reached the final at the expense of Smith, who couldn't beat him.”
“It should be acceptable to expense a business lunch with a client.”