Phlegmy is an adjective used to describe a person or thing that produces or is filled with mucus. Here are some antonyms for phlegmy that can serve to describe the opposite or a lack of phlegm: dry, deserted, arid, parched, dehydrated, waterless, gusting, fresh, clear, airy, breezy, and unobstructed. These words imply a lack of moisture or fluid, which is the opposite of phlegmy. They depict conditions or scenarios that lack a certain viscosity or sliminess. In contrast, phlegmy conditions can be related to infection or an imbalance in the respiratory system. So, using antonyms for phlegmy can help avoid such negative connotations.