dumb (EN)

adjective, verb

adjective “dumb”

1. (derogatory) describes someone who is not smart
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   He felt dumb for forgetting his own phone number.
2. (of an idea) pointless; foolish
   Buying the same book twice because you forgot you already owned it was dumb.
3. (dated) describes someone who cannot speak
   In the 19th century, schools for the deaf taught dumb students to use their hands for communication.

verb “dumb”

1. (followed by "down") to simplify something in a way that reduces its quality or accuracy
   The publisher decided to dumb down the science textbook, fearing it was too complex for high school students.