untouchable - noun

belongs to lowest social and ritual class in India

untouchable - adjective

• beyond the reach of criticism or attack or impeachment
• impossible to assail
• forbidden to the touch
• ( especially used in traditional Hindu belief of the lowest caste or castes) defiling
• not capable of being obtained

untouchable - thesaurus

harijan   inaccessible   unassailable   unobtainable   unprocurable