butt in, interlope, intermeddle, intrude,meddle, mess, muck (about or around), nose, obtrude,poke, pry, snoop

The interloper began selling items without a lisence.

Other ways to say "to meddle" include: to intervene or interfere in the affairs of others; to butt in, to interfere, to interlope, to fiddle, to get caught up in...

The Interlopers in The Interlopers can be both the wolves(nature) and the men Georg and Ulrich... The men interlope or intrude into the forest which is really owned by nature, not by men..

The wolves interlope or intrude upon the men which leads them to a fatal deeath..