1.
fool; idiot; stupid person
A person who acts foolishly or lacks good judgment. Somewhat literary or dramatic in tone, often found in stories, proverbs, and formal criticism.
この愚か者め!
You fool!
Related Words
Compare:
アホ (fool (Kansai dialect equivalent)
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愚か (foolish (the adjective form)
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間抜け (dunce, blockhead)