Longiloquence is a word that refers to the use of long, and sometimes unnecessary, words and sentences. It is a trait that some people possess that can make communication difficult. There are several synonyms for longiloquence that can be used to describe this trait, including loquacity, verbosity, prolixity, and circumlocution. Loquacity refers to a tendency to talk excessively, while verbosity refers to using more words than necessary. Prolixity is similar to longiloquence in that it means the use of unnecessarily long and complicated phrases. Finally, circumlocution refers to the use of indirect or roundabout language to avoid addressing a topic directly.