A more thorough explanation:

LYING BY

The act of being present at a transaction that affects one's interests but remaining silent. This means that even though you know something is wrong, you don't say anything about it.

For example, if you are in a meeting where your boss is discussing a project that you know is illegal, but you don't say anything, you are lying by. Even though you didn't say anything, the court may treat you as if you agreed to the illegal project and prevent you from objecting to it.

Another example is if you are in a group of friends who are planning to do something wrong, but you don't speak up and say it's not a good idea. You are lying by and could be seen as agreeing to the plan.

These examples illustrate how lying by can have consequences, even if you didn't actively participate in the wrongdoing. It's important to speak up and voice your concerns if you see something that is not right.