Found 2 items, similar to insouciance.
English → English (WordNet) Definition: insouciance insouciance n : the cheerful feeling you have when nothing is troubling you [syn: carefreeness, lightheartedness, lightsomeness]
English → English (gcide) Definition: Insouciance Insouciance \In`sou`ciance"\, n. [F.] Carelessness; heedlessness; thoughtlessness; unconcern. [1913 Webster]