To hang one's head; to droop one's head—often showing dejection, shame, or exhaustion.
試験に落ちて彼はうなだれていた。
He was hanging his head after failing the exam.
子どもが叱られてうなだれている。
The child is hanging his head after being scolded.
重い仕事が続いて、妻はうなだれたまま帰ってきた。
After a long stretch of hard work, my wife came home with her head bowed.