There are many synonyms that can be used for the phrase "turn over in the mind." These synonyms include ponder, mull over, contemplate, reflect on, think about, consider, deliberate, ruminate, meditate, and chew over. Each of these words has its unique connotation and meaning but all convey the same idea of actively thinking about something carefully and thoroughly. Whether you are trying to evaluate a decision, brainstorming new ideas, or simply exploring your thoughts, using these synonyms can help you bring clarity to your mind and make the best decisions for your life.