Explanation:

- The underlined word, "vindicated," means to show or prove to be right, reasonable, or justified.

- The task is to find the opposite of "vindicated."

Let's evaluate the options:

1. Justify: Similar to vindicate; it means to show that something is right or reasonable.

2. Disprove: Means to prove that something is false or wrong, making it the opposite of vindicate.

3. Warrant: Similar to justify; it means to justify or necessitate.

4. Substantiate: Means to provide evidence to support or prove the truth of something.