The story
From light-minded (adjective) + -ness (suffix forming nouns).
Etymology from Wiktionary, CC BY-SA 4.0.
light-mindedness
Today it means: The quality or state of one who is light-minded; lack of seriousness. Full definition →
Today it means: The quality or state of one who is light-minded; lack of seriousness. Full definition →
From light-minded (adjective) + -ness (suffix forming nouns).
Etymology from Wiktionary, CC BY-SA 4.0.