There are several synonyms for the phrase "are sick" that can be used in different contexts. Some alternatives include "are unwell," "are ill," "are under the weather," "are ailing," "are indisposed," "are feverish," "are suffering," "are afflicted," and "are infirm." Each of these phrases can convey a slightly different tone or level of severity when talking about someone's health. For example, "are unwell" might be used in a more general sense, while "are ailing" connotes a more significant or ongoing health issue. Regardless of which synonym is used, it's important to ensure the appropriate level of concern and sympathy is expressed when discussing someone's illness.