The story
- Late Latin · borrowed fromsōliloquium
- English todaysoliloquy
1595–1605; 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 4.0.