ineffable

in·ef·fa·ble  (n-f-bl)

adj.

1. Incapable of being expressed; indescribable or unutterable. See Synonyms at unspeakable.

2. Not to be uttered; taboo: the ineffable name of God.

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[Middle English, from Old French, from Latin ineffbilis : in-, not; see in-¹ + effbilis, utterable (from effr, to utter : ex-, ex- + fr, to speak; see bh-² in Indo-European roots).]

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in·effa·bili·ty, in·effa·ble·ness n.

in·effa·bly adv.

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ineffable

Adjective

too great or intense to be expressed in words [Latin in- not + effabilis utterable]

ineffably adv

Thesaurus

Adj.	1.	ineffable - defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor" indescribable, unspeakable, untellable, unutterable, indefinable inexpressible, unexpressible - defying expression
	2.	ineffable - too sacred to be uttered; "the ineffable name of the Deity" unnameable, unutterable, unspeakable sacred - concerned with religion or religious purposes; "sacred texts"; "sacred rites"; "sacred music"

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ineffable

adjective indescribable, unspeakable, indefinable, beyond words, unutterable, inexpressible, incommunicable