14 letters · 20 points in Scrabble
adjective not prepared or planned in advance
adjective not premeditated
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 premeditated English unpremeditated From un- + premeditated.
Etymology from Wiktionary, CC BY-SA 3.0