9 letters · 21 points in Scrabble
noun speech you make to yourself
noun a (usually long) dramatic speech intended to give the illusion of unspoken reflections
origin1595–1605; From Late Latin sōliloquium in the title of St. Augustine's Soliloquiorum libri duo ("Two Books of Soliloquies"), from sōlus (“only, sole”) + loquor (“to speak”).
Etymology from Wiktionary, CC BY-SA 3.0