Antonyms for the word "bucolic surrounding" could include terms such as urban, industrial, or metropolitan environment. These represent settings that have little to no natural scenery or greenery, and instead feature concrete and man-made structures. Other antonyms could be chaotic or crowded surroundings, which depict places that are noisy and bustling with people or traffic. Additionally, polluted or contaminated surroundings could be an antonym, as these refer to areas that are adversely affected by human activity and have negative impacts on the environment. Overall, while "bucolic surrounding" emphasizes the beauty and tranquility of nature, its antonyms often signify the opposite: a chaotic, polluted, and artificial landscape.