When it comes to finding antonyms for the phrase "got things rolling," there are several options available. First, you could use the phrase "stopped things in their tracks" to suggest that progress has come to a halt. Alternatively, you could use "put things on pause" to indicate that progress has been temporarily halted, but that work may resume at a later time. Finally, you could use "failed to initiate" to suggest that no progress has been made at all, and that things remain stagnant. Regardless of which antonym you choose to use, it's important to remember that every action can have an opposite, and that progress isn't always a given.