foolish

/fˈuːlɪʃ/

/ˈfuɫɪʃ/

foolish

not thinking or behaving wisely

antonyms : wise

having or revealing stupidity

synonyms : anserine

Examples

1. His foolish tendencies often cause misunderstandings with his friends.

2. l'd been pound foolish.

3. Even the most successful businessmen have made foolish decisions at some point in their careers, proving that every man has a fool in his sleeve.

4. He was foolish to think he could learn a new language in a week.