Definition

1. Adjective:
   • Stupid; foolish: Lacking intelligence or good judgment; acting in a silly or unintelligent way.
   • Idiotic; senseless: Describes an action, idea, or behavior that is extremely unwise or lacking in common sense.

Usage Examples

• Adjective:
  • Đó là một quyết định ngu ngốc. (That was a stupid decision.)
  • Nó có vẻ ngu ngốc, nhưng thực ra rất thông minh. (He seems foolish, but is actually very smart.)
  • Đừng có hỏi những câu hỏi ngu ngốc. (Don't ask stupid questions.)

Advanced Usage

• Used as a predicate adjective or attributively before a noun.
• Can be intensified with adverbs like "vô cùng" (extremely) or "thật sự" (truly).
  • Hành động đó vô cùng ngu ngốc. (That action was extremely foolish.)

Variants and Related Words

• Ngu (adj): A stronger, more blunt, and often more offensive term for "stupid."

  • Nó không ngu đến thế. (He's not that dumb.)

• Ngu si (adj): Emphasizes a dull, slow-witted, or dim-witted stupidity.

  • Có vẻ ngu si đần độn. (To appear dull-witted and obtuse.)

• Ngốc nghếch (adj): Suggests a silly, naive, or goofy kind of foolishness.

  • Cô ấy cười một cách ngốc nghếch. (She laughed in a silly way.)

Synonyms

• Stupid: Lacking intelligence.
• Foolish: Lacking good sense or judgment.
• Idiotic: Extremely stupid.
• Senseless: Lacking common sense or purpose.

Related Idioms

• Ngu như bò: As stupid as an ox; implying extreme dullness.

  • Giải thích mãi không hiểu, đúng là ngu như bò. (Explained forever and still doesn't understand, truly as stupid as an ox.)

• Khôn nhà dại chợ: Literally "smart at home, foolish at the market"; meaning someone who acts confidently in familiar settings but foolishly elsewhere.

  • Hắn ta là kiểu khôn nhà dại chợ. (He is the type who is smart at home but foolish in public.)

1. Dull, dull-headed
   • Đồ ngu ngốc!
     What a dullard!