11 letters · 18 points in Scrabble
noun belongs to lowest social and ritual class in India
adjective beyond the reach of criticism or attack or impeachment; - Newsweek
adjective impossible to assail
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- English touchable English untouchable From un- + touchable.
Etymology from Wiktionary, CC BY-SA 3.0