There are various synonyms for the term "broke down" depending on the context in which it is used. Some of the common synonyms include stalled, stopped, failed, malfunctioned, collapsed, and went kaput. These words denote a sudden and unexpected halt or malfunction of a machine, vehicle, or equipment. Similarly, in reference to a person, synonyms for "broke down" could include became emotional, cried, or collapsed into tears. In essence, any word that describes a sudden cessation of operations or a loss of control can be used as a synonym for "broke down." It is important, however, to choose the right word to ensure that the intended message is conveyed accurately.