unutterable : (adj.) akathanīya; anuccāriya.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

brjod par bya ba ma yin

[tenses]

• brjod
• rjod
• brjod
• rjod

[translation-san] {C} avacanīya (=avyāhāra)

[translation-eng] {Hopkins} inexpressible; ineffable

[translation-eng] {C} unutterable; cannot be expressed in words

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary