Definitions:

1. Describes something simple, unadorned, or straightforward in appearance or style. NOUN
   • Her dress was notable for its elegant planeness, lacking any embellishments or patterns.
2. Refers to physical characteristics, sucha as a surface being free from irregularities or curvature. NOUN
   • The planeness of the landscape stretched out before them, with no hills or valleys in sight.
3. The quality or state of being flat or level. NOUN
   • The planeness of the table's surface was ideal for drawing and writing activities.

Synonyms:

• evenness
• flatness
• levelness
• minimalism
• modesty
• plainness
• simplicity
• uniformity