Dictionary / Vocabulary / 寝ぼすけ
ねぼすけ
sleepyhead; oversleeper
Also written 寝坊助
「ゆみちゃんて、そろそろ起きたかな？」「どうだろうね。あの子寝坊助だからね」
"Isn't it time for Yumi to get up?" "I know, right? She's a sleepyhead."