cancel (

     n : a notation cancelling a previous sharp or flat [syn: natural]
     v 1: postpone indefinitely or annul something that was scheduled;
          "Call off the engagement"; "cancel the dinner party"
          [syn: call off]
     2: make up for; "His skills offset his opponent's superior
        strength" [syn: offset, set off]
     3: declare null and void;  make ineffective; "Cancel the
        election results"; "strike down a law" [syn: strike down]
     4: remove or make invisible; "Please delete my name from your
        list" [syn: delete]
     5: of cheques or tickets [syn: invalidate]