The term "broke ground" typically refers to the start of a construction project or any other significant event. There are several antonyms for this phrase, including "halted," "stopped," "suspended," and "abandoned." When a project is stopped or suspended, it means that there is a temporary or permanent pause in the work. On the other hand, "abandoned" implies that the project has been given up entirely. Meanwhile, "halted" denotes a sudden or forced stop that may or may not be temporary. Regardless of the antonym used, all suggest an end to the progress that was once underway.