Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
blithesome 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 blithesome come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.