"More illumined" is a phrase that indicates an increase in understanding, knowledge, or awareness. Its antonym, therefore, would be a phrase that denotes a decrease in these qualities. There are several possible antonyms for "more illumined," depending on the context in which it is used. For instance, "less enlightened," "diminished clarity," "reduced consciousness," or "a lack of understanding" could all serve as antonyms. In contrast to the original phrase, which implies brightness, clarity, and wisdom, the suggested antonyms convey the opposite: dullness, obscurity, and ignorance. By using contrasting terms, we can gain a more nuanced understanding of the meanings conveyed by words and phrases.