The phrase "without break" implies that something is continuous and uninterrupted. Some antonyms for this phrase could include "intermittently," "sporadically," "irregularly," or "discontinuously." These words suggest that there are interruptions or breaks in the activity or process in question. For example, if someone works "without break," they are working continuously without taking any breaks. However, if they work "intermittently," they are working in short bursts with breaks in between. Likewise, if a machine operates "without break," it runs continuously. But, if it operates "sporadically," it works irregularly or with gaps. Antonyms for "without break" can be useful when describing patterns or behaviors that are not consistent or constant.