The word "astasia" means which of the following?

The word "astasia" does not specifically mean "the inability to stand up." In medical terminology, "astasia" refers to a symptom called astasia-abasia, which is characterized by the inability to stand or walk properly, often due to impaired coordination and balance. It can be caused by various conditions affecting the nervous system, such as stroke or multiple sclerosis. However, it is important to note that "astasia" alone does not solely denote the inability to stand up, as it typically refers to the broader symptom of astasia-abasia.