Good understandings can be likened to having a strong grasp of a certain concept or topic. There are several synonyms that can be used to describe this ability. One term that is often used is "comprehension", which refers to the ability to understand and interpret information. Another synonym is "grasp", which speaks to the ability to fully appreciate the nuances and complexities of a subject. "Mastery" is another term for good understandings, which implies a deep level of knowledge and skill. "Familiarity" and "proficiency" can also be used to describe a solid understanding of a topic. Ultimately, possessing good understandings is crucial in one's personal and professional growth.