Related Clues:

• "What!?" look
• Look steadily (at)
• Betray amazement
• One may be blank
• Long look and tears when upset
• Look that might 'shoot daggers'
• [See notepad]
• Vacant look
• Visually fixate
• Compete in a no-blinking contest
• Sign of vacancy?
• Look at for too long
• Intense gaze
• Take a long, hard look
• Unblinking gaze