15 letters · 26 points in Scrabble
adjective unaware because of a lack of relevant information or knowledge
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 knowledgeable English unknowledgeable From un- + knowledgeable.
Etymology from Wiktionary, CC BY-SA 3.0