Meaning : Lacking or showing a lack of due concern.
Example :
Spoke with blithe ignorance of the true situation.
Meaning : Carefree and happy and lighthearted.
Example :
Was loved for her blithe spirit.
A merry blithesome nature.
Her lighthearted nature.
Trilling songs with a lightsome heart.
Synonyms : blithesome, light-hearted, lighthearted, lightsome