7 letters · 17 points in Scrabble
adjective guided by whim and fancy
adjective unpredictably excitable (especially of horses)
originFrom flight + -y. Compare Dutch vluchtig (“volatile; fleeting; cursory”), German flüchtig (“volatile; fleeting; momentary; quick”), Danish flygtig (“elusive; evasive”), Swedish flyktig.
Etymology from Wiktionary, CC BY-SA 3.0