The phrase "hit-or-miss" often refers to something that is unpredictable or done without careful planning. Its antonyms include "discerning," "meticulous," "deliberate," "careful," "methodical," "systematic", "intentional," and "purposeful." These words convey a sense of intentionality and precision, implying that the action or decision has been carefully thought out and executed with care. If you want to avoid a hit-or-miss approach to something, you may want to consider being more intentional in your planning and taking the time to carefully consider your options. The opposite of hit-or-miss helps you ensure that your decisions are informed and strategic.