tamper
tam·per
intransitive verb \ˈtam-pər\tam·peredtam·per·ing \-p(ə-)riŋ\
Definition of TAMPER
1
: to carry on underhand or improper negotiations (as by bribery)
2
a : 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>
— tam·per·er \-pər-ər\ noun
— tam·per·proof \ˈtam-pər-ˌprüf\ adjective
Origin of TAMPER
probably from Middle French temprer to temper, mix, meddle — more at temper
First Known Use: 1567
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