When it comes to discussing something in greater detail or with more complexity, there are several synonyms that can be used for the phrase "more deepening." Some of these words include "further delving," "increased depth," "deeper exploration," and "heightened scrutiny." These synonyms all convey the idea of taking a closer look at something, examining it from different angles, and searching for deeper meaning or understanding. By utilizing these synonyms, you can add nuance, depth, and precision to your language and better convey the complexity of the subject you are discussing.