DictionaryfoolPerson with poor judgment
noun / verb

fool

FOOL/fuːl/

A person displaying a lack of serious judgment.

The fool holds his umbrella upside down, collecting rain instead of blocking it.

Adult stands in rain using upside-down umbrella that catches water instead of sheltering him, foolish judgment.
Etymology

Latin follis named bellows or a leather bag. It probably developed the insulting sense “windbag, empty-headed person,” connecting an air-filled object with someone lacking good judgment.

In context

Storytime Haven368:22
What chance would you have? Your boat stove and you in the water—there is the end of it. No man of mine goes on such a fool’s errand
Sir Nigel ⚔️🌟 | A Tale of Chivalry and Adventure | Arthur Conan Doyle

More examples

  • The fake signature doesn't fool the bank teller.
  • We fool around during breaks but take our work seriously.
  • In the play, the king's fool entertains the court with jokes.

Forms

fool · fools · fooled · fooling

foolish adjective — Showing a lack of good judgment.

foolishness noun — Behavior that shows poor judgment.

Similar words

idiot
A harsher insult emphasizing low intelligence or extremely poor judgment.
simpleton
Emphasizes naive thinking and being easily deceived.