from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To interfere in a harmful manner: tried to tamper with the decedent's will; tampering with the timing mechanism of the safe.
  • intransitive v. To tinker with rashly or foolishly: Don't tamper with my feelings.
  • intransitive v. To engage in improper or secret dealings, as in an effort to influence: tamper with a jury. See Synonyms at interfere.
  • transitive v. To alter improperly.
  • n. A neutron reflector in an atomic bomb that also delays the expansion of the exploding material, making possible a longer-lasting, more energetic, and more efficient explosion.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A person or thing that tamps.
  • n. A tool used to tamp down tobacco in a pipe.
  • v. To alter by making unauthorized changes; to meddle.
  • v. To discuss future contracts against league rules with a player.

from the GNU version of the Collaborative International Dictionary of English

  • n. One who tamps; specifically, one who prepares for blasting, by filling the hole in which the charge is placed.
  • n. An instrument used in tamping; a tamping iron.
  • intransitive v. To meddle; to be busy; to try little experiments.
  • intransitive v. To meddle so as to alter, injure, or vitiate a thing.
  • intransitive v. To deal unfairly; to practice secretly; to use bribery.

from The Century Dictionary and Cyclopedia

  • To experiment rashly; busy one's self unwisely or officiously; meddle: usually followed by with in this and the other senses.
  • To interfere, as for the purpose of alteration; make objectionable or unauthorized changes (in): as, to tamper with a will or other document.
  • To use secret or underhand measures; exert unfair or corrupt influence; especially, to use improper persuasions, solicitations, bribery, etc.
  • n. One who tamps, or prepares for blasting by stopping the hole in which the charge is placed.
  • n. An instrument used in tamping; a tamping-bar or tamping-iron.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. intrude in other people's affairs or business; interfere unwantedly
  • n. a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)
  • v. play around with or alter or falsify, usually secretively or dishonestly


from The American Heritage® Dictionary of the English Language, 4th Edition

Probably alteration of temper.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle French temprer ("to temper, mix, meddle")


  • With hardware you can create what we call a tamper-resistant security module.

    Making Security A Competitive Advantage

  • The tag tamper alarm is particularly useful in identifying when a label has been cut off a piece of apparel in a retail store changing room, or indicating when a tag has been removed from its original position for any simple seals for items such as containers or jewelry.

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  • In addition, the new chips offer a variety of industry-first features, including a tag tamper alarm, several privacy mode options, and password-protected data transfer or digital switch.

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  • The radioactive material in a bomb is buried in a "tamper" - in these bombs, gold.

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  • So there's interesting things that one does to counteract these by using analytics, privacy protecting analytics like these things called tamper resistance logs that record how the people inside the bank, for example, actually looked at records.

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  • It comes with a large stick known as a tamper -- which is used to push the food you are blending into the blades -- and a separate container specifically designed for grinding grain.

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  • The core technology is called a tamper-resistant embedded controller TREC.

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  • "Long read ranges, without the extra cost of a second antenna, and effective privacy protection - combined with a tag tamper alarm - are essential in RFID tags and labels for high-volume consumer goods.

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  • The tamper is a wooden board used for firming the soil after sowing.

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  • This unique tag tamper feature sends a signal to the reader that it has been manipulated.

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  • JM knows a barista who was banned from making espresso so she lost her tamper.

    June 15, 2011

  • The anaesthetist arrived, tampered with my heart and lungs, an dimplored me to breathe deeply while he listened.

    - Peter Reading, C, 1984

    August 2, 2008