• greyback,
• frayback,
• vrayback,
• brayback,
• hrayback,
• yrayback,
• trayback,
• geayback,
• gdayback,
• gfayback,
• gtayback,
• g5ayback,
• g4ayback,
• graybak,
• graiback,
• greybak,
• Graybek,
• Graybach,
• Greybach,
• Graibak

• Grubaugh,
• gripsack.

The adjective form of "grayback" is "graybacked".

The plural of the "grayback" can be the "graybacks".

The singular of the "grayback" can be the "grayback".