The term luculent describes something that is clear and well-expressed, whether written or spoken. Other synonyms for this word include lucid, coherent, eloquent, articulate, and comprehensible. These words have similar meanings in that they all suggest a high degree of clarity and understanding. Luculent is particularly appropriate when describing someone's writing or speech, indicating a level of clarity and depth of knowledge. By using synonyms such as these, speakers and writers can add variety to their language, creating a more engaging and dynamic conversation or text. Choosing the most appropriate synonym will depend on the context and purpose of the words being used.