1. The territory, rank, or title of a duke.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• dreedom,
• duked,
• sukedom,
• xukedom,
• cukedom,
• fukedom,
• rukedom,
• eukedom,
• dykedom,
• dukdom,
• duukedom,
• husedog,
• tubefom,
• dukedome,
• duokodom,
• Dukedery,
• lukeron,
• Kuckodom,
• Kuckeldom,
• Mukedon

• duck down.

The adjective form of the word "dukedom" is "ducal".

The plural of the "dukedom" can be the "dukedoms".

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