1. The wife of a marquis.

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

• machiness,
• machiones,
• narchioness,
• karchioness,
• jarchioness,
• mzrchioness,
• msrchioness,
• mwrchioness,
• mqrchioness,
• maechioness,
• madchioness,
• marchionese,
• marchionesss,
• marchioneses,
• marcioness,
• marchoness,
• marchiones,
• marchionis,
• marcionness,
• Marconees

• marching,
• march on,
• Marchand,
• Marciniak,
• marcinko,
• Marcinek,
• maraschino,
• marchant,
• Marcinkowski,
• Marcionism,
• Murchinson,
• marciano,
• marchantiales.

The adjective form of the word "marchioness" is "marchioness's".

The plural of the "marchioness" can be the "marchionesses".

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