'Light-heartedness' definitions:

Definition of 'Light-heartedness'

From: GCIDE

Light-hearted \Light"-heart`ed\ (l[imac]t"h[aum]rt`[e^]d), a. Free from grief or anxiety; gay; cheerful; merry. -- {Light"-heart`ed*ly}, adv. -- {Light"-heart`ed*ness}, n. [1913 Webster]