A priori truths are facts and knowledge that are known prior to any experience or observation. Some synonyms for a priori truths include innate knowledge, intuitive knowledge, and deductive reasoning. Innate knowledge refers to knowledge that is already present within a person from birth and is not learned from external sources. Intuitive knowledge is knowledge that is gained through intuition or instinct rather than through rational thought or experience. Deductive reasoning refers to the process of arriving at a conclusion by drawing logical conclusions based on a set of known premises. Other synonyms for a priori truths may include self-evident truths, axiomatic knowledge, and principles.