tampering Definition

to interfere so as to weaken or change for the worse —used with with

to try foolish or dangerous experiments —used with with

to render something harmful or dangerous by altering its structure or composition

the act of physically harming or using threats, intimidation, harassment, or corrupt persuasion against a witness with the goal of influencing the witness's testimony or preventing the witness from providing evidence in an official proceeding

to change or touch (something) especially in a way that causes damage or harm