Related Clues:

• One who leers
• Peeping Tom, for one
• One on the sidelines
• One who observes
• Impolite inspector
• Beholder
• Wolf, at times
• One looking
• One who ogles, e.g.
• Watcher
• Rude observer
• Watchful one
• Flirtatious fellow
• One gazing
• Lascivious sort