cancel

1. (transitive) To cross out something with lines etc.Examples: "A deed may be avoided by delivering it up to be cancelled; that is, to have lines drawn over it in the form of latticework or cancelli; the phrase is now used figuratively for any manner of obliterating or defacing it."transitive

2. (transitive) To invalidate or annul something.Examples: "He cancelled his order on their website."; ""I don't know what your agreement was, Herr Professor, but if it had money in it, cancel it. I want him to learn that lesson, too.""; "These also included not canceling the Christmas display, whose kitschiness drove him bonkers but which endured because people love it and because he is a populist and showman, despite his elitist veneer, and because he has a heart."Synonyms: belay, undotransitive

3. (transitive) To mark something (such as a used postage stamp) so that it can't be reused.Examples: "This machine cancels the letters that have a valid zip code."transitive

4. (transitive) To offset or equalize something.Examples: "The corrective feedback mechanism cancels out the noise."transitive

5. (transitive, mathematics) To remove a common factor from both the numerator and denominator of a fraction, or from both sides of an equation.Examples: "Such a 2-handle cancels the 1-handle so the manifold is D⁴."transitive

6. (transitive, media) To stop production of a programme.transitive