dumbo

/ˈdʌmboʊ/
noun
  1. A person who is stupid or slow to understand; a fool (informal, often used playfully or as an insult).
    • Don't be such a dumbo; the answer is right in front of you.
    • Only a dumbo would try to cross the street without looking.
    • He felt like a dumbo for forgetting his own phone number.
Antonyms
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