He hisses a greeting with all the ineffable politeness of an old-school Japanese.
From the time.com
The only real problem we'll have is if you try to question my now ineffable rule.
From the economist.com
His ineffable cool seemed a universe away from my provincial adolescent existence.
From the guardian.co.uk
Ein-Sof, which is referred to below, may be thought of as an ineffable singularity.
From the guardian.co.uk
Such human encounters, momentary though they are, enhance life in an ineffable way.
From the post-gazette.com
The more you dig into narrative structure the more it reveals its ineffable beauty.
From the independent.co.uk
Democracy has adapted itself well to the ineffable complexities of the caste system.
From the economist.com
Judaism sees this One, True God as a singular, ineffable, undefinable being.
From the en.wikipedia.org
There is darkness here, and the ineffable disquiet of great, harrowing art.
From the time.com
More examples
Indefinable: defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor"
Too sacred to be uttered; "the ineffable name of the Deity"
(ineffably) to an inexpressible degree; "she was looking very young tonight, and, as usual, indescribably beautiful, in a simple strapless dress of a green and white silky cotton"
Ineffability is concerned with ideas that cannot or should not be expressed in spoken words (or language in general), often being in the form of a taboo or incomprehensible term. ...
Beyond expression in words; unspeakable; Forbidden to be uttered; taboo
(ineffably) Intensifies an adjective to mean indescribably; Intensifies an adjective to mean unmentionably
(adj.) unspeakable, incapable of being expressed through words (It is said that the experience of playing with a dolphin is ineffable and can only be understood through direct encounter.)
(adj) - too great to be described; not to be known
Incapable of being stated or described because of some elusive transcendental quality such as ideality, ethereality or spirituality.