Mucolytic refers to a drug or substance that helps to break down mucus and facilitate its removal from the body. There are several synonyms that can be used to describe mucolytic, including expectorant, mucoregulator, mucus eliminator, mucus thinner, and mucus loosener. These terms are commonly used in the medical field to refer to drugs that are designed to treat respiratory conditions such as chronic obstructive pulmonary disease (COPD), bronchitis, and asthma. Each of these synonyms describes a drug or substance that works to reduce the viscosity of mucus and improve its clearance from the lungs, making it easier to breathe and improving respiratory function.