special : (adj.) visesa; asādhāraṇa; āveṇika.

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

thun mong ma yin pa

[translation-san] {C} asādhāraṇa

[translation-eng] {Hopkins} unshared; uncommon

[translation-eng] {C} which is not shared; in which one does not share; special

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary