adjective
R
Very sleepy or not awake, like when someone is sick or has taken strong medicine.
After the accident, he was stuporous and didn't wake up easily.
事故の後、彼は眠気蒙々で、簡単に目が覚めなかった。
R
Not reacting quickly, like someone who is very tired or not paying attention.
The teacher noticed that the student was stuporous and not following the lesson.
先生は、その学生が眠気蒙々で、授業に集中していないことに気づいた。
translation
眠りについている, 反応の遅い