The phrase "going to pieces" refers to the state of falling apart or experiencing a breakdown. Synonyms for this expression include crumbling, disintegrating, deteriorating, breaking down, collapsing, falling apart, and dismembering. Other alternative phrases that could be used include losing one's grip, coming undone, falling apart at the seams, and unraveling. These synonyms can be used interchangeably depending on the context and the level of severity of the situation. Whether one is referring to an object or a person, these synonms offer a more evocative way of expressing the idea of things falling apart.