dumb (EN)

形容詞、動詞

形容詞 “dumb”

1. 馬鹿（ばか）
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   He felt dumb for forgetting his own phone number.
2. 愚か（おろか）
   Buying the same book twice because you forgot you already owned it was dumb.
3. 無言（むごん）（話すことができない意味で）
   In the 19th century, schools for the deaf taught dumb students to use their hands for communication.

動詞 “dumb”

1. 単純化する（質や正確さを落とす意味で）
   The publisher decided to dumb down the science textbook, fearing it was too complex for high school students.