"Jump one case" can have various antonyms depending on the context it is used in. If it refers to avoiding a hurdle or barrier, then the antonyms could be "examine thoroughly," "address directly," "concentrate on," or "tackle head-on." If it implies making a sudden decision or taking a rash action, then the antonyms could be "deliberate," "careful," "cautious," or "methodical." Alternatively, if it pertains to skipping over an item in a list or sequence, then the antonyms could include "follow sequentially," "proceed in order," "systematic," or "meticulous." In essence, the antonyms for "jump one case" depend on the specific meaning and context in which the phrase is used.