The phrase "growing strong" can be used to express a sense of vitality, resilience, and progress. It can be substituted with several other synonyms that convey similar meanings such as flourishing, thriving, prospering, blossoming, blooming, and developing. Each of these words suggests a sense of growth, strength, and positive change. For example, we can say that a business is flourishing when it is growing strong and generating profits. Or we can say that a child is developing well when they are growing strong both physically and mentally. Regardless of the context, these words convey a sense of growth and strength that can inspire and motivate those around us.