What is another word for sick as a dog?
Pronunciation: [sˈɪk az ɐ dˈɒɡ] (IPA) 
When we're feeling ill, we often use the expression "sick as a dog" to describe how we're feeling. However, there are plenty of other synonyms that can convey the same sentiment. For example, we might say we feel "under the weather," "poorly," or "queasy." We could also describe ourselves as "feeling off" or "unwell." In more severe cases, we might use phrases like "sick as a parrot," "burning up," or "knocked out." Whatever the case may be, there's no shortage of phrases to use when we're feeling sick, though hopefully, we don't need to use any of them too often!
