Jump case is a legal term that refers to a case which is outside of the normal course of proceedings. There are a variety of synonyms for this term, including "outlier case," "offbeat case," "unusual case," "exceptional case," and "special case." Other synonyms may include "uncommon case," "atypical case," "deviant case," "irregular case," and "one-off case." Essentially, all of these terms describe a case that is not common or typical and requires extra attention or consideration. Jump cases may be more complex, involve unique situations, or require different procedures than other cases, making them stand out from the regular flow of legal proceedings.