• grealy,
• grily,
• grayly,
• freyly,
• vreyly,
• breyly,
• hreyly,
• yreyly,
• treyly,
• geeyly,
• gdeyly,
• gfeyly,
• gteyly,
• g5eyly,
• g4eyly,
• grfeyly,
• greilly,
• Grayley,
• Greyley,
• greylie

• grey,
• rely,
• Greely,
• cruelly,
• grall,
• grayly,
• groll,
• gruel,
• growl,
• grail,
• greeley,
• greatly,
• grill,
• grell.

The adjective form of "greyly" is "grey".

The plural form of the word "greyly" remains the same, it does not change.

The singular form of the word "greyly" is "grey"