9 letters · 13 points in Scrabble
verb remove the bridle from (a horse or mule)
adjective not restrained or controlled
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 bridled English unbridled From un- + bridled.
Etymology from Wiktionary, CC BY-SA 3.0