Main verb is the crucial element of any sentence that shows the main action or state of being. It is also known as the principal verb or the primary verb. However, there are many other synonyms that can be used instead, such as the core verb, key verb, central verb, and principle verb. All of these synonyms refer to the same idea, which is that the main verb is the most essential component in any sentence. Whether you are writing an academic paper or a creative piece, using a variety of synonyms can enhance the readability and creativity of your work, making it more engaging for your audience.