cancel
UK: ˈkæns(ə)l | US: ˈkæns(ə)l
vt. to decide that something planned will not happen
vt. to officially end a contract or agreement
vt. to mark or void (a document) to prevent reuse
vi. (of opposing factors) to neutralize each other
The word "cancel" traces back to Latin cancellare, meaning "to make like a lattice"—a reference to crisscrossing lines scribbled over text to invalidate it. Medieval scribes used this method to void documents, and the term evolved metaphorically to mean "nullify" or "terminate." The modern sense of "calling off" events emerged later.
The airline canceled all flights due to the storm.
She canceled her gym membership after moving.
The stamp was used to cancel the postmark.
His apology canceled out her anger.
The noise canceled the audio signal.