Barflies refer to the regular patrons of bars. However, there are several other synonyms for this word that can be used instead. One of the most commonly used terms is "regulars," which denotes someone who frequents a particular bar regularly and is well-known to the staff. Other possible synonyms include "drinking buddies," "bar-hoppers," "tavern-goers," "nightlife enthusiasts," "pub-crawlers," and "drinkers." The term "alcoholics" may also be used, although it carries a more negative connotation. Ultimately, the specific synonym chosen will depend on the context and tone of the conversation, as well as the desired level of formality.