去世 (qù shì): to pass away

My grandfather passed away last winter at the age of eighty-nine.

Hearing the news of her old friend's sudden passing, she was too sad to speak.

After that famous writer passed away, his works actually became even more popular.

The neighbor's dog passed away, and the whole family was very sad, deciding not to keep pets anymore.

The doctor regretfully told the family that the patient might not live past this month, but they didn't expect him to pass away so suddenly.