10 letters · 18 points in Scrabble
adjective not slowed or blocked or interfered with
adjective not held in check or subject to control
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 hampered English unhampered From un- + hampered.
Etymology from Wiktionary, CC BY-SA 3.0