The antonyms for the word "giving ovation" would be "booing," "hissing," and "jeering." While giving an ovation shows approval and admiration, booing, hissing, and jeering express disapproval, contempt, or even hatred. These types of negative reactions are usually aimed at someone who has done something undesirable or unacceptable, either intentionally or unintentionally. They may also be used to express disagreement or disappointment with a decision or action taken. It's important to remember that while it's okay to express our opinions and feelings, we should always strive to do so in a respectful and constructive way, even when we don't agree with others.