a priori

The phrase "a priori" refers to knowledge or understanding that is obtained or justified independently of experience or empirical evidence. In philosophy, it describes reasoning that is based on fundamental principles or self-evident truths, rather than on observations or facts. A priori knowledge is considered to be innate or known prior to or independently of any particular experience. It often contrasts with "a posteriori," which describes knowledge that is derived from experience, observation, or evidence.