- carefreeness, insouciance, lightheartedness, lightsomeness - the cheerful feeling you have when nothing is troubling you
--1 is a kind of cheerfulness, blitheness
- agility, legerity, lightness, lightsomeness, nimbleness - the gracefulness of a person or animal that is quick and nimble
--2 is a kind of gracefulness
- lightsomeness - the trait of being lighthearted and frivolous
--3 is a kind of giddiness, silliness