tamper

Noun

• a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)

Verb

• intrude in other people's affairs or business; interfere unwantedly
  • Don't meddle in my affairs!
    

• play around with or alter or falsify, usually secretively or dishonestly
  • Someone tampered with the documents on my desk
    
  • The reporter fiddle with the facts
    

Related words

• Synonyms: 
  tamp , tamping bar , meddle , fiddle , monkey