wakeful
adjective formal uk/ˈweɪk.fəl/ us/ˈweɪk.fəl/
不能入睡的;（一段时间内）难以入睡的
not able to sleep, or used to describe a period of time when you are not able to sleep
We spent a wakeful night worrying about where he was. 我们度过了一个不眠之夜，一直在担心他去哪里了。
She lay there wakeful the whole night. 她躺在那里，彻夜未眠。