A more thorough explanation:

Definition: To meddle with something in a way that is illegal, corrupting, or perverting. It can also mean to interfere improperly.

1. The athlete was caught tampering with his drug test by adding water to his urine sample.

2. The company was accused of tampering with the election results by hacking into the voting machines.

3. The teacher warned the students not to tamper with the experiment by changing the variables.

These examples illustrate how tampering involves making changes to something in a way that is not allowed or appropriate. In the first example, the athlete tried to cheat by altering his drug test. In the second example, the company tried to manipulate the election results. In the third example, the teacher wanted to ensure that the experiment was conducted properly and without any interference.