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.
双语例句
1. She was still tired and sleepy when he woke her.
他叫醒她的时候，她仍然又累又困。
来自柯林斯例句
2. All of a sudden she didn't look sleepy any more.
她突然看起来一点都不困了。
来自柯林斯例句
3. Sleepy-eyed commuters were wending their way to work.
