There are several synonyms for the phrase "get sick." One of the most common synonyms is "fall ill." This phrase is often used to describe a general feeling of malaise or discomfort, rather than a specific diagnosis. Other synonyms include "become ill," "come down with," "contract a disease," "fall victim to illness," and "catch something." These synonyms are often used in medical or scientific contexts, but can also be used in everyday conversation. When using synonyms for "get sick," it is important to consider the specific context and intended meaning of the phrase in order to choose the most appropriate synonym.