Cancel (verb)

1. To decide or announce that an event or arrangement will not take place.
2. To declare void; invalidate.
3. To delete or mark as not to be done.
4. To cross out or erase (something written or printed).
5. To counteract or neutralize (something).

Origin:

Middle english cancellen, from old french canceller, from latin cancellare, from cancelli bars, from canalis channel.

Examples:

1. The concert was cancelled due to the storm.
2. The contract was cancelled because of a breach of agreement.
3. He cancelled his reservation because he changed his plans.
4. She cancelled the incorrect item on her shopping list.
5. The vaccine can cancel out the effects of the virus.