Meaning: very ill, vomitting a lot bệnh hoạn như một con chó, dùng để nói về tình trạng đau bụng ói mửa nhiều, tình trạng dạ dày có vấn đề
He was sick as a dog after last night's meal
Meaning: very worried and concerned
bệnh hay lo, đứng ngồi không yên
Her parents were worried sick when she didn't come home all night.
chán đến phát ốm
I'm sick and tired of working so hard
Meaning: very disappointed about something
buồn, sầu thảm, thất vọng
He was sick as a parrot when his team lost the match.