1) Alarms 2) Bad moments 3) Boos at 4) Causes jitters 5) Causes to jump 6) Causes to quake 7) Causes to stampede 8) Close calls 9) Cows 10) False alarms 11) False bomb threats 12) Frightens 13) Frightful events 14) Gets on Halloween 15) Gives a fright 16) Gives the willies 17) Gives the willies to 18) Grist for alarmists 1) Alarms 2) Cows 3) Frightens 4) Spooks