If you write off a plan or project, you accept that it is not going to be successful and do not continue with it. We decided to write off the rest of the day and go shopping The prices were much higher. So we decided to write that off see also write-off
If someone writes off a vehicle, they have a crash in it and it is so badly damaged that it is not worth repairing. John's written off four cars. Now he sticks to public transport One of Pete's friends wrote his car off there
If you write someone or something off, you decide that they are unimportant or useless and that they are not worth further serious attention. He is fed up with people writing him off because of his age His critics write him off as too cautious to succeed These people are difficult to write off as malingering employees. = dismiss
If someone writes off a debt or an amount of money that has been spent on a project, they accept that they are never going to get the money back. The president persuaded the West to write off Polish debts
If you write off to a company or organization, you send them a letter, usually asking for something. He wrote off to the New Zealand Government for these pamphlets about life in New Zealand. = write