12 letters · 17 points in Scrabble
adjective difficult to use or handle or manage because of size or weight or shape
adjective hard to control; ,
adjective difficult to solve or alleviate
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 manageable English unmanageable From un- + manageable.
Etymology from Wiktionary, CC BY-SA 3.0