Définitions
1.VerbTo reduce the book value of (an asset) to zero.
2.VerbTo record (an expenditure) as an expense.
3.VerbTo remove a portion of a debt or an amount of an account owed, counting it as a loss (as a gesture of goodwill for example).
4.VerbTo record a notional expense such as amortization or depreciation.
5.VerbTo treat as a write-off, a total loss, especially something damaged beyond economic repair.
6.VerbTo assign a low value to (somebody or something)."When Katya was injured, he wrote off the team's chances in the finals."