imperscriptible adjective.
[ɪmpǝ'skrɪptɪb(ǝ)l] rare.
M19.[from IM-2 + Latin perscript- pa. ppl stem of perscribere write at length, register, formed as PER-1 + scribere write, + -IBLE.]Not backed by a written authority.
[TahlilGaran] English Dictionary ▲