íratlan
Íratlan is a Hungarian adjective meaning unwritten or not recorded in writing. It is used to describe rules, norms, or agreements that function in practice but are not codified in formal documents or legislation. In contrast to írásos, which denotes something that is written or documented, íratlan points to tacit understanding and customary practice that is accepted without formal inscription.
The word is formed from the verb írni (to write) and the element that gives the sense
Usage notes: íratlan is widely understood in modern Hungarian and appears in essays, journalism, and scholarly