The story
- Proto-Indo-European*men-
- Proto-Hellenic*mónwos
- Ancient Greekμόνος (mónos)
- Ancient Greekμονο- (mono-)
- Proto-Indo-European*leǵ-
- Proto-Indo-European*lóǵos
- Proto-Hellenic*lógos
- Ancient Greekλόγος (lógos)
- Medieval Greekμονόλογος (monólogos)
- Middle Frenchmonologue
- English todaymonologue
First attested in c. 1550. Borrowed from Middle French monologue, modeled on dialogue, ultimately from Medieval Greek μονόλογος (monólogos). By surface analysis, mono- + -logue.
Etymology from Wiktionary, CC BY-SA 4.0.