intuition is an "irrational function", opposed most directly by sensation, and opposed less strongly by the "rational functions" of thinking and feeling. Jung defined intuition as "perception via the unconscious": using sense-perception only as a starting point, to bring forth ideas, images, possibilities, or ways out of a blocked situation, by a process that is mostly unconscious.

Jung said that a person in whom intuition is dominant--an "intuitive type"--acts not on the basis of rational judgment but on