The antonyms of "more luculent," which means clear and easily understood, are words that signify confusion and ambiguity. Some of these words are murky, obscure, unclear, and perplexing. These words imply a lack of clarity, making it difficult to understand texts, instructions, or explanations. They create confusion and can cause misinterpretation or misunderstanding that leads to errors. It is important to avoid using these antonyms when clarity and understanding are essential. Instead, it is best to use synonyms of "more luculent," such as obvious, straightforward, transparent, and simple, to effectively communicate ideas and information.