FLIGHTINESSES
Scrabble letter values: F4L1I1G2H4T1I1N1E1S1S1E1S1 = 20
Definition
FLIGHTINESSES is the plural of FLIGHTINESS.
noun FLIGHTINESS: the trait of acting unpredictably and more from whim or caprice than from reason or judgment.
Synonyms of FLIGHTINESS: arbitrariness, whimsicality, whimsy, whimsey, capriciousness