meddling

Adjective

• intrusive in a meddling or offensive manner
  • an interfering old woman
    
  • bustling about self-importantly making an officious nuisance of himself
    
  • busy about other people's business
    

Noun

• the act of altering something secretly or improperly

Related words

• Synonyms: 
  interfering , meddlesome , officious , busy , busybodied , tampering