• zrdennes,
• srdennes,
• wrdennes,
• qrdennes,
• aedennes,
• addennes,
• afdennes,
• atdennes,
• ardenes,
• ardenne,
• arrenne,
• cardinnes,
• padronnes,
• arsenne,
• arsennius,
• ardens,
• ardinne,
• ardineex,
• ardees,
• adenaese

• ardently,
• artemis,
• aridness,
• Arden,
• ariadne,
• ardent.

The adjective form of the word "Ardennes" is "Ardennais" (masculine) or "Ardennaise" (feminine).

The plural form of the word "ardennes" is also "ardennes".

The singular form of the word "Ardennes" is "Ardennes". The word is already in its singular form.