tamper[verb]Synonyms: interfere, alter, fiddle
(informal), fool about
(informal), meddle, mess about, tinker
[TahlilGaran] English Synonym Dictionary ▲
tam‧per /ˈtæmpə $ -ər/
verb[
Date: 1500-1600;
Origin: Probably from temper]
tamper with something phrasal verb to touch something or make changes to it without permission, especially in order to deliberately damage it:
He noticed that the instruments had been tampered with. I don’t see the point in tampering with a system that’s worked fine so far. [TahlilGaran] Dictionary of Contemporary English ▲