Apriorism refers to the practice of basing a belief or argument on prior assumptions rather than empirical evidence. Its antonyms, on the other hand, are characterized by a reliance on empirical evidence and objective reality. Empiricism is the antonym of Apriorism, emphasizing the importance of gathering data and observing outcomes to derive conclusions. Another antonym is Rationalism, which stresses the examination of theories and beliefs through critical reasoning and logical deductions. Sensationalism, subjectivism, and irrationalism are also antonyms that represent a preference for sensationalized information, personal bias, and illogical reasoning, respectively. In summary, antonyms of apriorism highlight the importance of objective evidence and critical thinking to make sound judgments.