hypnagogic means that induces sleep; soporific, somniferous. Lexicurio rates it Sui generis — a strength score of 85 out of 100.
Why this word is great
HYPNAGOGIC — [Adjective] Pertaining to the transitional state of consciousness immediately preceding sleep, often characterized by sensory phenomena or hallucinations. From French hypnagogique, from Ancient Greek ὕπνος (húpnos, "sleep") + ἀγωγός (agōgós, "leading"). Unlike hypnopompic, which maps the disorienting frontier of waking, or soporific, which merely induces a general heaviness, hypnagogic defines the specific, porous terrain of the threshold itself. It is the fleeting geometry that blooms behind closed eyelids, the phantom sentence spoken clearly by no one, the sensation of falling that jolts you back to a body you had already begun to leave behind—the mind's final, half-dissolved impressions before the embassy of the self closes for the night.
adj
- That induces sleep; soporific, somniferous.
- That accompanies falling asleep; especially, pertaining to the semi-conscious period immediately preceding sleep.“But if we are in the right mood, a second of such lethargy is enough to make a hypnagogic [translating hypnagogische] hallucination appear, after which perhaps we reawaken, until the oft-repeated performance is brought to an end by sleep.”