Definition of "ineffable"
ineffable
adjective
not comparable
Beyond expression in words; unspeakable.
Quotations
Stroeve was trying to express a feeling which he had never known before, and he did not know how to put it into common terms. He was like the mystic seeking to describe the ineffable.
1919, W[illiam] Somerset Maugham, chapter 39, in The Moon and Sixpence, [New York, N.Y.]: Grosset & Dunlap Publishers […]
God does not play dice with the universe; He plays an ineffable game of his own devising, which might be compared, from the perspective of any of the other players, to being involved in an obscure and complex version of poker in a pitch dark room, with blank cards, for infinite stakes, with a dealer who won't tell you the rules, and who smiles all the time.
1990, Terry Pratchett, Neil Gaiman, Good Omens