tamper

nouns

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

tamp, tamper, tamping bar

is derived from

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"

fiddle, monkey, tamper

intrude in other people's affairs or business; interfere unwantedly

"Don't meddle in my affairs!"

meddle, tamper

is derived from