epistemic

The word 'epistemic' is a modern philosophical term derived from the ancient Greek noun 'epistēmē', which signified a systematic, justified body of knowledge as opposed to mere opinion ('doxa'). The suffix '-ic', of Greek origin via Latin, is a standard adjectival formant. The term entered English in the 20th century, primarily through epistemology, the branch of philosophy concerned with the theory of knowledge. Thus, 'epistemic' directly pertains to the nature, scope, and foundations of what we know and how we justify our beliefs.

Structure: episteme (knowledge) + ic (adjective suffix) episteme (from Greek ἐπιστήμη (epistēmē), meaning 'knowledge, science'); ic (from Greek -ικός (-ikos), via Latin -icus, forming adjectives meaning 'of, pertaining to').