"One-off" (always hyphenated) refers to something that will happen only once, never be repeated. Can be used as an adjective: "a one-off payment".
How do you write one off?
write someone or something off
- 1. . to give up on turning someone or something into something. I had to write Jill off as a future executive. ...
- 2. . to give up on someone or something as a dead loss, waste of time, hopeless case, etc. Don't write me off as a has-been. ...
- 3. . to take a charge against one's taxes.
Is it once off or one off?
"Once off" is generally used in the financial or commercial sector. It represent that payments, receipts or "offers" is for a certain period of time and there may be further payments, subscriptions or "offers" which might be require in the future. "One off" is final, no further payments or subscriptions are needed.
