archness (countable and uncountable, plural archnesses)
- The state of being arch.
- 1811, Jane Austen, Sense and Sensibility, chapter 18
- Marianne was surprised and confused, yet she could not help smiling at the quiet archness of his manner
- 2004, Alan Hollinghurst, The Line of Beauty, Bloomsbury, 2005, Chapter 3,
- There was something artless in Toby's delivery; he was working in the family tradition of teasing, but he was too relenting and couldn't yet match Gerald's heavy archness.