14 letters · 19 points in Scrabble
adjective failing to inform or clarify
adjective not edifying
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 enlightening English unenlightening From un- + enlightening.
Etymology from Wiktionary, CC BY-SA 3.0