Synonyms of ineffable

Adjective

1. indefinable, indescribable, ineffable, unspeakable, untellable, unutterable, inexpressible (vs. expressible), unexpressible

usage: defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor"

2. ineffable, unnameable, unspeakable, unutterable, sacred (vs. profane)

usage: too sacred to be uttered; "the ineffable name of the Deity"

Definition and meaning of ineffable (Dictionary)