one-off
🇺🇸
/ˌwʌn ˈɔːf/
🇬🇧
/ˌwʌn ˈɒf/
An event or object that occurs or is created only once, not part of a regular pattern or series.
The charity event was a one-off occasion, and it raised a lot of money for a good cause.
자선 행사가 일회성 행사였고, 좋은 대의를 위해 많은 돈을 모았습니다.