noun
the cheerful feeling you have when nothing is troubling you (Freq. 1)
• Syn: ↑carefreeness, ↑lightheartedness, ↑lightsomeness
• Derivationally related forms: ↑lightsome (for: ↑lightsomeness), ↑lighthearted (for: ↑lightheartedness), ↑insouciant, ↑carefree (for: ↑carefreeness)
• Hypernyms: ↑cheerfulness, ↑blitheness
Useful english dictionary. 2012.