adj. 25B6; adjective INDESCRIBABLE, undefinable, unutterable, unspeakable, ineffable, beyond words; unimaginable, inconceivable, unthinkable, untold.
INEXPRESSIBLE
Meaning of INEXPRESSIBLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012