Cancel

Cancel, cancellation, or cancelled may refer to:

Business

 * Project cancellation, in government and industry
 * Cancellation (mail), a postal marking applied to a stamp or stationery indicating the item has been used
 * Cancellation (insurance), the termination of an insurance policy
 * Flight cancellation and delay, not operating a scheduled flight

Sociology

 * Cancel culture, boycotting and ostracism calling out offensive behavior on social media or in real life

Technology and science

 * Cancel leaf, a bibliographic term for replaced leaves in printed books
 * Cancellation property, the mathematical property if a×b = a×c then b = c
 * Cancelling out, a technique for simplifying mathematical expressions
 * Catastrophic cancellation, numerical error arising from subtracting approximations to nearby numbers
 * Noise cancellation, a method for reducing unwanted sound
 * Phase cancellation, the effect of two waves that are out of phase with each other being summed
 * Cancel message, a special message used to remove Usenet articles posted to news servers
 * Cancel character, an indication that transmitted data are in error or are to be disregarded
 * Resolution rule, in propositional logic a valid inference rule that produces a new clause by two clauses containing complementary literals.
 * Cancellable (linguistics), a property of implicatures and presuppositions

Entertainment

 * Cancellation (television), the termination of a television series
 * "Cancelled" (South Park), a 2003 episode of the TV series South Park
 * "Canceled" (Nikita), a 2013 episode of Nikita
 * "Canceled" (song), a 2020 song by Larray

People and characters

 * Robinson Cancel (born 1976), baseball catcher
 * Rafael Cancel Miranda (born 1930), political activist
 * An alternate name for the archangel Camael

Government

 * Cancellation of removal, a form of immigration relief available to aliens in the United States who be otherwise inadmissible or deportable
 * Cancellation of nationality