The word "more polluted" refers to an increase in the amount of harmful substances or pollutants that exist in the air, water, or soil. Some synonyms for more polluted include dirtier, contaminated, toxic, fouled, and tainted. These words describe the negative impact that pollution can have on the environment and human health. With pollution levels continuing to rise around the world, it is important to take action to reduce our impact on the planet. This can be achieved through individual actions such as reducing plastic usage or supporting eco-friendly products, as well as through government policies and regulations. By working together, we can create a cleaner and healthier world for future generations.