판단력이나 분별력이 부족한 상태 또는 그러한 행동.
The quality of lacking good sense or judgment, or an act that demonstrates this quality.
예문:
"The foolishness of leaving the car unlocked in a busy city was a hard lesson to learn."
"Her foolishness in trusting a complete stranger led to a significant financial loss."
"Stop this foolishness and focus on the task at hand."