14 letters · 19 points in Scrabble
adjective not corrupted by contact or association
adjective free from admixture with noxious elements; clean
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 contaminated English uncontaminated From un- + contaminated.
Etymology from Wiktionary, CC BY-SA 3.0