Related Clues:

• Perceptive
• Sound the tocsin
• Startle
• On your toes
• Affright
• With eyes wide open
• It might help you get up
• Mentally responsive
• Word with smoke or fire
• Item that may be connected to a car's ignition
• It may be red
• Smoke signal?
• Qui vive
• All ears
• Eye opener?