sleepy
adj.
early 13c. from sleep, n. + -y(2). Perhaps in Old English but not recorded. Old English had slæpor, slæpwerig in the sense "sleepy;" slæpnes "sleepiness." Similar formation in Old High German slafag. Of places, from 1851 (Irving's Sleepy Hollow is from 1820). Sleepy-head is from 1570s. Related: Sleepily; sleepiness.
〔李〕[sleep v. 睡；-y →] a. inclined to sleep；ready to go to sleep想睡的；瞌睡的