This な-adjective means "healthy" or "energetic." It describes a person who is well and full of energy, or expresses well-being. Usage: Use な before a noun (e.g., 元気な子供). Or, (person) は 元気です. Example: My mother is very healthy.

「健康」「活発」という意味。人が体調が良い、活動的である様子を表す。「な」をつけて名詞を修飾。例：私の母はとても元気です。