The story
- Englishtit
- Proto-Indo-European*swep-
- Proto-Indo-European*supnós
- Proto-Hellenic*húpnos
- Ancient Greekὕπνος (húpnos)
- Ancient Greekὑπνόω (hupnóō)
- Ancient Greekὕπνωσις (húpnōsis)
- Englishhypnosis
- English todaytitnosis
Etymology from Wiktionary, CC BY-SA 4.0.