Ligger is a colloquial term that is often used in the media and advertising industry to refer to someone who attends events solely for the purpose of networking and socializing. This word has a negative connotation, and some people may find it offensive. However, there are several synonyms that can be used instead of ligger. Some of these synonyms include socialite, networker, event-goer, party-goer, mingler, and connector. These words have a more positive connotation than ligger and can be used to describe someone who attends events for professional or personal reasons. It's always best to choose the right word to convey your message without offending anyone.