INSOUCIANCES
Scrabble letter values: I1N1S1O1U1C3I1A1N1C3E1S1 = 16
Definition
INSOUCIANCES is the plural of INSOUCIANCE.
noun INSOUCIANCE: the cheerful feeling you have when nothing is troubling you.
Synonyms of INSOUCIANCE: carefreeness, lightheartedness, lightsomeness