Related Clues:

• One staring
• Tube watcher
• Peeping Tom, for one
• Mata Hari, e.g.
• One who observes
• Beholder
• One looking
• One who ogles, e.g.
• Watcher
• Agent, at times
• Watchful one
• Flirtatious fellow
• One gazing
• One who ogles
• TV watcher