• deadeyen,
• deadpeyen,
• dead0-eyen,
• dead-0eyen,
• deadp-eyen,
• dead-peyen,
• dead--eyen,
• deadmeyen,
• deadeien,
• dead-ein,
• dead-eying,
• dead-eigen,
• dead-eyin,
• deadeyin

The adjective form of the word "dead-eyen" would be "dead-eyed".

The plural form of the word "dead-eyen" is "dead-eyen".

The singular form of the word "dead-eyen" is not commonly used. "Dead-eyen" seems to be a plural form itself, derived from the adjective "dead-eyed," which means having dull or lifeless eyes.