write off

from Wiktionary, Creative Commons Attribution/Share-Alike License

• v. To reduce an asset's book value to zero
• v. To record an expenditure as an expense.
• v. To remove a portion of a debt or an amount of an account owed to you counting it as a loss (as a gesture of goodwill for example)
• v. To record a notional expense such as amortization or depreciation.
• v. Figuratively, to assign a low value to something.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• v. write something fluently, and without hesitation
• v. concede the loss or worthlessness of something or somebody
• v. cancel (a debt)
• v. reduce the estimated value of something