When it comes to synonyms for the phrase "more behind," there are several options to consider. For one, the phrase "further back" serves as an effective replacement, suggesting that there is a distance or gap between where something currently stands and where it previously was. Alternatively, "lagging behind" can be used to describe a situation where progress or success is not keeping up with expectations or standards. "Trailing" and "falling behind" are also commonly used, especially in the context of a competition or race. Ultimately, the choice of synonym will depend on the specific context and emphasis of the sentence.