The term "runon" is often used to describe a grammatically incorrect sentence structure that is created when two or more independent clauses are joined together without proper punctuation. Instead of using a runon, writers may opt for alternative expressions that convey the same meaning. Some synonyms for the word "runon" might include "fused sentence," "comma splice," or "incomplete sentence." These terms all describe the same issue in different ways and can be used to help writers identify and correct runon sentences in their own writing. By using appropriate punctuation and sentence structures, writers can communicate their ideas more clearly and effectively to their readers.