sleepless
adjective [ before noun ] uk/ˈsliːp.ləs/ us/ˈsliːp.ləs/
C1 失眠的，不能成寐的
without any sleep
I've spent so many sleepless nights worrying about him. 好几个夜晚我因为担心他而夜不能寐。
[ after verb ]失眠的，无法入睡的
not able to sleep
Alone and sleepless, she stared miserably up at the ceiling. 她孤独难眠，痛苦地盯着天花板。