Tampering

v. meddle, interfere; tinker, fiddle; engage in secret or improper activities

Tampering may refer to:Tampering (sport), the practice, often illegal, of professional sports teams negotiating with athletes of other teamsTamper-evident, a device or process that makes unauthorised access to a protected object easily detectedTamperproofing, a methodology used to hinder, deter or detect unauthorised access to a deviceSabotage, modification of a device to induce failure
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Noun
1. the act of altering something secretly or improperly
(synonym) meddling
(hypernym) change of state
(derivation) meddle, tamper

Noun
1. a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)
(synonym) tamp, tamping bar
(hypernym) tool
(hyponym) stemmer
(derivation) tamp down, tamp, pack
Verb
1. 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"
(synonym) fiddle, monkey
(hypernym) manipulate
2. intrude in other people's affairs or business; interfere unwantedly; "Don't meddle in my affairs!"
(synonym) meddle
(hypernym) intervene, step in, interfere, interpose
(derivation) meddling, tampering

(p. pr. & vb. n.)
of Tamper
  

Action taken to compensate for variation within the control limits of a stable system. Tampering increases rather than decreases variation, as evidenced in the funnel experiment.