tamper

tam·per

verb \ˈtam-pər\

tam·peredtam·per·ing\-p(ə-)riŋ\

Definition of TAMPER

intransitive verb

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