untellable

adjective

un·​tell·​able

¦ən‧¦teləbəl

: inexpressible

a thing of untellable splendor

—Lucius Beebe

the ecstasy of this experience is untellable

—A. J. Russell

untellably

-blē

adverb

Word History

Etymology

Middle English, from un- entry 1 + tellen to tell + -able

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