sleepiness, n. [drowsiness], somnolence.
sleeping, a. asleep, slumbering, [dormant].
sleepless, a. [wakeful], insomnious, insomnolent.
sleeplessness, n. [wakefulness], insomnia, insomnolence.
sleep of plants. nyctitropism. Associated word: nyctitropic.
sleepwalker, n. somnambulist, noctambulist, somnambulator, somnambule.
sleepwalking, n. somnambulism, somnambulation, somnambulance, noctambulism, noctambulation. Associated words: somnambulate, somnambulistic, somnambular, somnambulic.
sleepy, a. [drowsy], somnolent, dozy; soporiferous, somniferous, soporific, dormitive, [narcotic], somnific, hypnotic; [dormant], [sluggish], lethargic, [torpid], [dull].
sleeve, n. Associated word: chevron.
sleigh, n. cutter, [sled], sledge, bobsled, toboggan, jumper, pung.