When you want to describe something as grand or impressive, you might use the term "high sounding." However, there are many other words that can convey similar meanings. For example, you could say that something is lofty, majestic, or sublime. These words all suggest that something is impressively high or grand in nature. Alternatively, you might use the term pompous or bombastic, which suggests that someone is using language that is intentionally elaborate or exaggerated. Other words that could be used instead of "high sounding" include grandiose, ostentatious, or pretentious. Choosing the right word to describe something can help you to convey the exact meaning that you want to communicate.