polypragmon
/ˌpɒlɪˈpraɡmən/rare after 17th cent
noun
A person concerned with many affairs; specifically an interfering or officious person, a busybody.
Origin
Late 16th century. From ancient Greek πολυπράγμων busy about many things, meddlesome, officious from πολυ- + πρᾶγμα thing done.