wakeful

adj．(夜间)不眠的，睡不着的；(人)醒着的

waist-high, waistband, waistcoat, waisted, waistline, wait, wait at table, wait for, wait on, wait up for, waiter, waiting room, waiting-list, waiting-room, waitress, waive, waiver, wake, wake up, wake up to, wakefully, wakefulness, waken, Wales, walk, walk into sth, walk off, walk out, walk over sb, walk up, walk-in, walk-on, walk-out, walk-over, walk-up, walkabout, walker, walkie-talkie, walking papers, walking rein,