'Untellable' definitions:

Definition of 'untellable'

From: WordNet
adjective
Defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor" [syn: indefinable, indescribable, ineffable, unspeakable, untellable, unutterable]

Definition of 'Untellable'

From: GCIDE