14 letters · 18 points in Scrabble
adjective difficult to solve or alleviate
adjective of persons
adjective incapable of being controlled or managed
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 controllable English uncontrollable From un- + controllable.
Etymology from Wiktionary, CC BY-SA 3.0