1. Properly; fitly; in a suitable or becoming manner; regularly; at the proper time.

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

• jwly,
• doully,
• buly,
• daliy,
• duy,
• uly,
• atuly,
• dupply,
• duble,
• daly,
• deley,
• delya,
• sudly,
• dialy,
• dudy,
• quily,
• dooly,
• idlly,
• doule,
• tuely

• duell,
• duel,
• duley,
• dula,
• dual,
• dully,
• duty,
• dulle,
• dull,
• july.

The adjective form of the word "duly" is "due".

The plural form of "duly" is "dulies".

The singular form of the word "duly" is "duly". The word does not have a distinct singular form as it is already in its base or singular form.