• whistels,
• wistles,
• whitles,
• whistes,
• waisters,
• whistpers,
• whisles,
• whissles,
• whister,
• whishtles,
• wistler,
• whislers,
• whistles,
• whistlefis,
• qhistlers,
• ahistlers,
• shistlers,
• ehistlers,
• wistlers,
• Wristalets

• whistle buoy,
• whistling,
• whistlestop,
• whistle,
• whistle stop,
• whistler.

The adjective form of the word "whistlers" is "whistling".