Meaning of the word foolish in English

What does foolish mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

foolish

US /ˈfuː.lɪʃ/
UK /ˈfuː.lɪʃ/
"foolish" picture

Adjective

lacking good sense or judgment; silly

Example:
It was foolish of him to quit his job without a backup plan.
Don't make such a foolish mistake again.