9 letters · 12 points in Scrabble
adjective without apparent forethought or prompting or planning
adjective not done with purpose or intent
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 planned English unplanned From un- + planned.
Etymology from Wiktionary, CC BY-SA 3.0