foolish Meaning, Definition & Usage

  1. adjective devoid of good sense or judgment
    • foolish remarks
    • a foolish decision
  2. adjective satellite having or revealing stupidity
    goosey; dopy; goosy; anserine; dopey; jerky; gooselike.
    • ridiculous anserine behavior
    • a dopey answer
    • a dopey kid
    • some fool idea about rewriting authors' books

WordNet

Fool"ish adjective
Definitions
  1. Marked with, or exhibiting, folly; void of understanding; weak in intellect; without judgment or discretion; silly; unwise.
    I am a very foolish fond old man. Shak.
  2. Such as a fool would do; proceeding from weakness of mind or silliness; exhibiting a want of judgment or discretion; as, a foolish act.
  3. Absurd; ridiculous; despicable; contemptible.
    A foolish figure he must make. Prior.
    Syn. -- Absurd; shallow; shallow-brained; brainless; simple; irrational; unwise; imprudent; indiscreet; incautious; silly; ridiculous; vain; trifling; contemptible. See Absurd.

Webster 1913