Immediate Knowledge is a term often used as a synonym for intuitive knowledge; knowledge, not mediated by any factor (e.g. signs). In a colloquial sense, intuition is a reminder, an instruction. But after the great influence exerted by Charles Peirce and some others, this term often means something quite different in semiotic discourse. Means a momentary, immediate, and true perception of an object or event.
An example of what is (as it is claimed) intuitive or immediate knowledge would be the direct perception of Friday from the book Robinson Crusoe.
Before being able to directly perceive the other inhabitants of the island on which he was abandoned, Robinson Crusoe had only a discursive or indirect knowledge that someone could live on this island. From the fresh footprint, he concluded that he was not alone.
What Peirce and others insist is that perception as a form of knowledge is different not in appearance, but only in degree from all other forms of human knowledge. Even our direct perceptions of objects and events are only moments of an interpretively loaded and created as an inference process of cognition.
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