1. the act of calling off or stopping something that was planned
2. a mark or stamp showing that something has been used or is no longer valid

Examples

• The flight cancellation left passengers stranded at the airport.
• Due to rain, the school announced the cancellation of the outdoor concert.
• The hotel charged a fee for last-minute cancellations.
• She was disappointed by the cancellation of her favorite TV show.
• The postage stamp showed a clear cancellation mark.
• Event cancellations increased during the pandemic.
• The cancellation policy requires 24 hours notice.