canceller

/ˈkænsələr/
noun
  1. A person or thing that cancels something, such as a ticket, reservation, or event.
    • She worked as a canceller for the concert venue, handling last-minute cancellations.
    • The software includes an automatic canceller for duplicate orders.
    • The airline's canceller processed dozens of refunds after the storm.
Synonyms
What does "canceller" mean? | whatsthatwordmean | whatsthatwordmean