좋은 판단력이나 분별력이 부족한; 현명하지 못하거나 어리석은.
Lacking good sense or judgment; unwise or silly.
예문:
"It was foolish of him to quit his stable job without having a backup plan."
"She made a foolish mistake by trusting a complete stranger with her personal information."
"Don't waste your time on such foolish arguments; focus on the main issue."