Antonyms for the word "catalyze" include impede, hinder, discourage, obstruct, and delay. While catalyze means to bring about or accelerate a reaction or process, these antonyms refer to actions that slow down, block, or prevent progress. For example, an obstacle in the road could impede traffic, while discouraging remarks could hinder progress on a project. Delaying a decision or action might also obstruct progress towards a goal. While catalyzing can be positive, encouraging action and innovation, antonyms like impede and delay suggest a lack of urgency or motivation. Ultimately, the choice of whether to catalyze or hinder progress is up to individuals and organizations as they pursue their goals.