What does "untellable" mean?

That cannot be told; indefinable, indescribable or ineffable.

What is a synonym for "untellable"?

Common synonyms include: indescribable, ineffable, unutterable, arcane, censored, classified.

adj

adj ·Uncommon ·Advanced level

Adjective

Adjective

From Middle English untellable; equivalent to un- + tellable.