Related Clues:
- Scare or worry
- Frighten, scare
- Strike fear
- Clock that wakes you up
- This clock wakes you up
- It signals danger
- Paying close attention
- Thinking and acting quickly
- Sudden apprehension and fear
- 'Attentive, watchful (5)'
- 'Attentive, vigilant (5)'
- Notification
- If this will make Albert get ready to fight, that's dreadful
- A frightful fifty over 27 across
- It's 35 across