ku-adjective (archaic)
unspeakable; indescribable; inexpressible
Archaic 'ku' adjective meaning something is beyond words, so extreme or profound that it cannot be expressed. Found in classical Japanese texts.
The beauty of that scenery is beyond words.
In classical literature, a sorrow so great it is described as 'unspeakable' is depicted.
Compound of 言ふ (archaic form of 言う, 'to say') + 方 (way, method) + 無し (archaic adjective meaning 'not exist'). Literally 'there is no way to say it', used as an archaic adjective for something inexpressible.