Synonyms for Meddling (same or very similar meaning)
WordNet sense 1 (intrusive in a meddling or offensive manner):
busy, meddlesome, officious, interfering, busybodiedWordNet sense 2 (tending to intrude (especially upon privacy)):
intrusiveWordNet sense 3 (the act of altering something secretly or improperly):
tamperingFrom the ODE community, based on WordNetadd/edit