be (as) sick as a dog

slang To be very ill. Honestly, I haven't been avoiding you—I've been sick as a dog. I had to go to the doctor on Monday because I was as sick as a dog all weekend.

Common Names:

Name	Pronounced	Usage
Toria	TAWR-yə	English
Cayden	KAY-dən	English (Modern)
Sampo	SAHM-po (Finnish)	Finnish, Finnish Mythology
Stafford	['stæfəd]
Dulcie	DUL-see	English
DƯƠNg	-	Vietnamese