The word "partier" is commonly used to describe individuals who enjoy attending social gatherings and parties. However, there are several synonyms that can be used to convey this idea. These include socialite, party-goer, reveler, celebrant, merrymaker, and night owl. Other synonyms that can capture the idea of enjoying life and leisure may include hedonist, pleasure seeker, or bon vivant. It's important to choose the right synonym to accurately convey the intended meaning of the word and not give off any negative connotations. Ultimately, whatever term is selected, it should accurately reflect the persona of the person in question and give the reader a clear picture of who they are.