When it comes to expressing the idea of "more completely," there are various synonyms that can be used depending on the context. Some of the possible options include "thoroughly," "entirely," "comprehensively," "totally," "fully," "intensively," "exhaustively," "meticulously," "systematically," "deeply," "utterly," and "wholly." Each of these words conveys the sense of completeness and thoroughness, but they may differ slightly in terms of the nuance or emphasis they bring to the sentence. By choosing the right synonym for "more completely," you can enhance your writing and convey your message more effectively.