one-off
- n a happening that occurs only once and is not repeated
- Friday's Dollhouse was an intriguing one-off idea regarding the uses of the Dollhouse's technologya woman using it to literally return from the dead to witness its aftermath.
- Is it a one-off, or the start of a gorilla sexual revolution? Breuer is hesitant to draw any conclusions, noting that scientists observe just a sliver of the life of wild gorillas .
- Hitch adds, "It was meant to be a one-off thing.