tam·per | \ ˈtam-pər \
tampered; tampering\ˈtam-p(ə-)riŋ \

Definition of tamper 

intransitive verb

1a : to interfere so as to weaken or change for the worse used with with did not want to tamper with tradition

b : to try foolish or dangerous experiments used with with

c : to render something harmful or dangerous by altering its structure or composition was charged with tampering with consumer products

2 : to carry on underhand or improper negotiations (as by bribery)

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Other words from tamper

tamperer \ˈtam-pər-ər \ noun
tamperproof \ˈtam-pər-ˌprüf \ adjective

Examples of tamper in a Sentence

Recent Examples on the Web

Leon Arthur Kirk Doniphan is charged with tampering with physical evidence. Max Londberg, kansascity, "Security guards with Overland Park firm murder man in car outside KC bar, police say," 11 July 2018 The brothers are also both charged with tampering with physical evidence and unlawful disposal of remains and are currently being held on $10 million bail. Chris Harris, PEOPLE.com, "Wash. Teen Was Lured into Woods for Camping Trip Before Friend Allegedly Raped, Killed Him," 4 July 2018 Rebecca Rivera, 34, left, and Dania Amezquita-Gomez are charged with tampering with physical evidence in connection with the death of Rivera's son, who washed up dead on a Galveston, Texas beach in October 2017. Matthew Martinez, star-telegram, "Naked boy washed up on Texas beach 8 months ago. His mom, her girlfriend are in jail," 20 June 2018 He had been expected to testify in a witness-tampering case involving the Uribe brothers and paramilitary groups. New York Times, "In Colombian Death Ranch Case, Some Fear Prosecution Will Be Buried," 8 July 2018 Greitens announced his decision to step down as governor that same month after striking an agreement with Gardner’s office to drop an unrelated computer tampering case. Bryan Lowry, kansascity, "Judge appoints special prosecutor for probe of investigator in Greitens case," 29 June 2018 In exchange, Gardner dropped a felony computer-tampering case over allegations that Greitens used a list of donors from his charity for veterans to solicit campaign contributions. Matt Pearce, latimes.com, "Former Missouri Gov. Eric Greitens won't face charges over sexual blackmail allegations," 8 June 2018 Vehicles in the 2100 block of Craig Lane were tampered with Sunday. The Aegis, "Harford County police blotter," 1 June 2018 Inside, a person checked to ensure the ankle bracelet hadn't been tampered with. Mark Alesia, Indianapolis Star, "Archbishop backs mom of 2 facing deportation, but immigration authorities dig in," 24 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tamper.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tamper

1567, in the meaning defined at sense 2

History and Etymology for tamper

probably from Middle French temprer to temper, mix, meddle — more at temper entry 2

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Dictionary Entries near tamper






tamper with


Phrases Related to tamper

tamper with

Statistics for tamper

Last Updated

28 Aug 2018

Look-up Popularity

Time Traveler for tamper

The first known use of tamper was in 1567

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More Definitions for tamper


tam·per | \ ˈtam-pər \
tampered; tampering

Kids Definition of tamper

: to interfere or change in a secret or incorrect way Someone was tampering with the official records.


Legal Definition of tamper 

1 : to bring improper influence to bear (as by bribery or intimidation) used with with tampered with the jurors

2 : to alter or interfere in an unauthorized or improper manner used with with tampered with evidence

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More from Merriam-Webster on tamper

Spanish Central: Translation of tamper

Nglish: Translation of tamper for Spanish Speakers

Britannica.com: Encyclopedia article about tamper

Comments on tamper

What made you want to look up tamper? Please tell us where you read or heard it (including the quote, if possible).


occurring twice a year or every two years

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