intellectualness
/ˌɪntɪˈlɛktʃʊəlnɪs/ /ˌɪntɪˈlɛktʃ(ʊ)lnɪs/ /ˌɪntɪˈlɛktjʊəlnɪs/noun
The quality or character of being intellectual; intellectuality.
Origin
Mid 17th century; earliest use found in John Sergeant (1623–1707), Roman Catholic controversialist and philosopher. From intellectual + -ness.