Meaning
うつむく (utsumuku) is a bonus vocabulary word meaning “look down, lower one's eyes”.
Example sentences 4
彼はうつむいて何かを考えているね。
He is thinking about something with his head down.
彼女は恥ずかしくてうつむいた。
She bent her head in shame.
彼女は夜半までトイレでうつむいて吐いていた。
She'd spent half the night with her head down the toilet throwing up.
言ってから、まゆちゃんは恥ずかしそうに俯いてしまう。
Having said it, Mayu hangs her head in embarrassment.