the quality of being rash and foolish
"trying to drive through a blizzard is the height of folly"
"adjusting to an insane society is total foolishness"
“Ma ndị nile nụrụ okwu ndị a, ma lefuo ha anya, bụ ndị nzuzu. Ha dị ka nwoke wuru ụlọ ya nꞌelu aja.
“But as many as hear these things, and disregard them, are foolish. They are like the man who built his house upon the sand.