lighthearted

lighthearted /ˈlaɪtˌhɑɚtəd/ adjective
lighthearted
/ˈlaɪtˌhɑɚtəd/
adjective
Britannica Dictionary definition of LIGHTHEARTED
[more lighthearted; most lighthearted]
1 
: having or showing a cheerful and happy nature

— lightheartedly

adverb

— lightheartedness

noun [noncount]