"Mulls" is a verb that typically means to think over or consider deeply. There are several synonyms that can be used to convey a similar meaning, including ponder, contemplate, reflect, deliberate, analyze, scrutinize, examine, and assay. Each of these words emphasizes the act of thoughtfully considering something, whether it be a complex situation or a simple decision. Ponder implies a deep and prolonged consideration, while contemplate often implies a quiet and contemplative process. Reflect suggests a thoughtful consideration that draws on past experiences, while deliberate implies careful and logical analysis. Overall, these synonyms can be used to convey the act of thoughtful consideration and analysis that is often associated with the word "mulls".