Tamper definitions

tăm'pər
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.
noun
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To tinker rashly or foolishly.
verb
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1
To interfere in a harmful or disruptive manner; meddle.

Was worried the editor would tamper with her text.

verb
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A person or thing that tamps; specif., any of various instruments or tools for tamping.
noun
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To contrive something secretly; plot; scheme.
verb
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To tamper is to interfere with something you shouldn't in a harmful way or to change something you shouldn't change.

When you change the way an electronic item is wired, voiding the warranty, this is an example of a situation where you tamper with the product.

verb
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A person or thing that tamps.
noun
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A tool used to tamp something down, such as tobacco in a pipe.
noun
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To make alterations or adjustments, especially secretly so as to subvert an intended purpose or function.

Tamper with a lock; discovered that the brakes had been tampered with.

verb
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To engage in improper or secret actions, as in an effort to influence an outcome.

Tamper with evidence; tamper with a jury.

verb
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To alter improperly.
verb
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To interfere or tinker with something that is not authorized.
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(intransitive) To alter by making unauthorized changes; to meddle.
verb
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(in professional sports) To discuss future contracts against league rules with a player.
verb
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Origin of tamper

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