"Get the act" is a phrase meaning to prepare or organize oneself to do something, but it can also mean to behave in a more disciplined and composed manner. Some antonyms for this phrase include "lackadaisical," which means lazy or careless, "disorganized," which means lacking in order or structure, and "chaotic," which means characterized by disorder and confusion. Other antonyms may be "lazy," "sloppy," or "unsystematic." In general, these words describe attitudes or behaviors that are contrary to the notion of "getting the act" together, and suggest that someone is not taking responsibility for their actions or is not sufficiently focused on achieving their goals.