Related Clues:

• Betray surprise
• It may be icy
• Etiquette breach
• Unconscious gaze (with the preceding space)
• Surveyor's look
• Look fixedly
• Exhibit rudeness, in a way
• See 20-Across, maybe
• Look (at)
• Peer
• Fixate upon
• Stare intently
• Intense look
• Steady stare
• Fixed look