The antonyms of "pattern up on" include "disregard," "ignore," "neglect," "overlook," and "miss." These words are often used when someone fails to take note of important details or fails to follow a specific pattern or routine. For instance, if you neglect to follow a specific pattern or routine that you usually do, you might miss some important details in the process. Similarly, if you disregard a pattern or routine, you might overlook important information that could have otherwise been useful. Thus, it's important to pay attention to the patterns and routines that we establish in our lives as they can help us achieve our goals and stay organized.