go under

US /ɡoʊ ˈʌndər/
UK /ɡoʊ ˈʌndər/
"go under" picture
1.

倒産する, 破産する

to go bankrupt

:
Many small businesses go under during a recession.
不況時には多くの小規模企業が倒産する
The company is expected to go under by the end of the year.
その会社は年末までに倒産すると予想されている。
2.

意識を失う, 眠りにつく

to become unconscious or fall asleep, especially due to an anesthetic or exhaustion

:
The patient began to go under as the anesthesia took effect.
麻酔が効き始めると、患者は意識を失い始めた
After a long day, he just wanted to go under and sleep.
長い一日の後、彼はただ眠りにつきたかった