There are several synonyms for the phrase "is out of order." One might say that something is malfunctioning, not functioning properly, not working correctly, or simply broken. If a system or machine is not working, it might be described as being offline, inoperative, or defective. The phrase could also refer to a situation being disordered or chaotic, and in this case one might use the terms chaotic, disorganized, or unruly. If something is not functioning correctly, it might also be referred to as faulty, damaged, or flawed. Regardless of the context, there are many ways to describe something that is out of order.