one-off

adjective
1.
done, occurring, or made only once; one-shot.
noun
2.
something occurring, done, or made only once.
Origin
1935-40
Examples from the web for one-off
  • Particularly given how many questions executives were asked about serialized versus one-off storytelling.
  • But that success is a one-off, and the big contributors are still contributing big, with all that entails.
  • Unfortunately, the conversion was a one-off vehicle.
  • We have so many one-off designers that have these little cottage industries.
  • The multiple-extra role wasn't a one-off effort either.
  • It also muddles up one-off emissions from deforestation with ongoing pollution.
  • University police have admitted that they believed the killings were a one-off domestic dispute.
  • But there's no telling whether this is a one-off scolding or will translate into longer-term action.
  • They're often one-off hand-holding proposals with indefinite ends.
  • Those that cheated on the first encounter got a one-off allocation of fitness, but would never be trusted in the future.
British Dictionary definitions for one-off

one-off

noun
1.
(Brit)
  1. something that is carried out or made only once
  2. (as modifier): a one-off job
Also one-shot
Word Origin
See off (sense 15)
Word Origin and History for one-off
n.

"single example of a manufactured product," 1934, from one + off. Later given figurative extension.

Slang definitions & phrases for one-off

one-off

noun

Something unique; something not repeated:encouraged band member Jim Warchol to think of 5th and National as more than a one-off (1934+)