11 letters · 16 points in Scrabble
adjective free from emotional agitation or nervous tension; ; - Anthony Trollope
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 perturbed English unperturbed From un- + perturbed.
Etymology from Wiktionary, CC BY-SA 3.0