"Get out of order" is a phrase that is used to describe when something is not functioning in the way that it should. There are various synonyms to express the same meaning such as malfunction, break down, fail, go wrong, stop working, act up, fall apart, collapse, disrupt, and disturb. A malfunction indicates that the device or system is not performing as it was designed to do. Breaking down implies that something has stopped functioning, while fail indicates that something did not achieve its intended purpose. Going wrong and acting up suggest that something is not going according to plan. In contrast, fall apart, collapse, disrupt, and disturb imply that something has experienced a more significant failure.