köken: Inherited from Ancient Greek ὕπνος (húpnos, “sleep”), from Proto-Indo-European *supnós (“sleep”). Cognates include Mariupol Greek и́пно (ípno), English sweven, Sanskrit स्वप्न (svápna), Spanish sueño, Italian sonno and Latvian sapnis.
aile: αξύπνητος, αφυπνίζω, αφύπνιση, πάω για ύπνο, υπναράς
köken: Uncertain. Possibly be a coinage in Japanese from Middle Chinese-derived elements, as a compound of 催(さい) (sai, “causing, inducing”) + 眠(みん) (min, “sleep”). First attested in 1872.
köken: Internationalism; compare English hypnosis, French hypnose, German Hypnose, ultimately from Ancient Greek ὕπνος (húpnos). Doublet of Hypnos and sen.