The phrase "got the act" generally refers to someone who is performing or behaving in a skilled or professional manner. The antonyms for this phrase can be numerous, depending on the context in which it is used. For example, someone who is described as "not having the act" may be inexperienced, unprepared, or lacking in confidence. Other antonyms could include clumsy, awkward, uncoordinated, or inept. Additionally, someone who is said to "lose the act" may be seen as making mistakes, being careless, or simply not living up to expectations. Therefore, finding the right antonym for "got the act" depends on the speaker's intended meaning and the context in which it is being used.