The Vietnamese word "đa sự" refers to someone who is meddlesome or behaves like a busybody. It describes a person who is overly concerned with the affairs of others, often involving themselves in situations that do not concern them. This behavior can be seen as intrusive or annoying.
While "đa sự" primarily means meddlesome, it can also imply being overly curious or nosy about things that don't concern oneself. Context is crucial to understanding the exact nuance.