The Vietnamese word "đằng ấy" is an informal way to refer to "you" or "that person" in a conversation. It is often used in a friendly or casual context, and it can imply a certain distance or respect depending on the relationship between the speakers.
In more advanced usage, "đằng ấy" can also carry a sense of teasing or playfulness, depending on the context. For example, if you're joking with a friend, you might use "đằng ấy" to make the conversation feel light-hearted.
While "đằng ấy" primarily means "you," it can also be used to refer to a third person when talking about someone else indirectly, similar to saying "that person" in English.