1. the quality or state of being palatial; magnificence and grandeur in size, design, or furnishings
Usage: abstract noun derived from the adjective 'palatial'; formal register

Examples

• The palatialness of the mansion impressed all the guests who attended the gala.
• The hotel's palatialness was evident in its marble floors and crystal chandeliers.
• She was overwhelmed by the palatialness of the royal palace during her tour.
• The architect designed the building with a sense of palatialness that reflected the client's wealth.
• Despite its palatialness, the estate remained surprisingly intimate and welcoming.