say it: LAHYT-hahr-tid
lighthearted is an adjective meaning "carefree and happy and lighthearted". It carries one recorded sense.
carefree and happy and lighthearted
“was loved for her blithe spirit”
“a merry blithesome nature”
“her lighthearted nature”
“trilling songs with a lightsome heart”
Definitions, synonyms and semantic relations for lighthearted come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.