How To Use Lightheartedness In A Sentence

A little more lightheartedness would render me the happiest being under the sun.
Pink roses: elegance, gracefulness, refinement, gentility, style and poetic romance but being combined with fun and lightheartedness.
Solemnity and lightheartedness, an important dimension of Chinese literature, has been subjected to an undeserved negligence.
Yu Si modern, the origin of modern genre of lightheartedness, manifested itself explicitly in the perspectives of theoretical system and practice.
Seriously, when we buy a book about a cartoon rabbit, we expect a little bit more lightheartedness and a lot less "Oh, dear God, NOOOOOOO!

Side note: For those of you who know me too well and are wondering why I didn't use the term breasts, as is my usual preference for such an area, since for some reason people are scared of that word ... well, I just felt that boobs added more to the lightheartedness of the post. TravelPod.com TravelStream™ — Recent Entries at TravelPod.com
The combination emanated both heady romance and lightheartedness, two things she lacked entirely.
They looked at each other with a sudden lightheartedness that had gravity mixed into it.