introvertedly

introverted +‎ -ly

introvertedly (comparative more introvertedly, superlative most introvertedly)

1. In an introverted manner.
   • 1857, Isaac Taylor, The World of Mind, London: Jackson and Walford, Chapter 15, p. 217,

     Mind is not always in act, either toward the outer world, or, introvertedly, toward its own states.

   • 1959, Theodora Kroeber, The Inland Whale, Bloomington: Indiana University Press, pp. 162-163,

     […] a person would sit within and against the encircling walls, introvertedly sheltered and alone, looking toward the open sea.

   • 2010, Howard Jacobson, chapter 2, in The Finkler Question‎, New York: Bloomsbury, page 60:

     But there was little joy for him in Alfredo’s musicality. The boy – the man now – played introvertedly, for nobody’s pleasure but his own.