one off

/wʌn ɔf/
adjective
  1. Happening, made, or done only once and not repeated.
    • The artist agreed to a one-off performance at the local theater.
    • We received a one-off payment from the insurance company.
    • This is a one-off opportunity to meet the author in person.
noun
  1. Something that is made, done, or happens only once and is not repeated.
    • This design is a one-off, created especially for the museum exhibition.
    • The concert was a one-off, so we were lucky to get tickets.
    • The company produced the toy as a one-off for a charity auction.
What does "one off" mean? | whatsthatwordmean | whatsthatwordmean