What is the meaning of simpleness?

noun

• A lack of penetration or subtlety.
  • usage: "they took advantage of her simplicity"
  • synonyms: simplicity, simple mindedness
• The quality of being simple or uncompounded.
  • usage: "the simplicity of a crystal"
  • synonyms: simplicity
• Freedom from difficulty or hardship or effort.
  • usage: "he rose through the ranks with apparent ease"; "they put it into containers for ease of transportation"; "the very easiness of the deed held her back"
  • synonyms: ease, easiness, simplicity
• Lack of ornamentation.
  • usage: "the room was simply decorated with great restraint"
  • synonyms: chasteness, restraint, simplicity