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Definition of “dumb” - English Dictionary

"dumb" in American English

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dumbadjective

 us   /dʌm/
  • dumb adjective (STUPID)

[-er/-est only] infml stupid: Don’t say anything – just act/play dumb (= pretend to be stupid or not to know something).
  • dumb adjective (SILENT)

(Definition of dumb from the Cambridge Academic Content Dictionary © Cambridge University Press)







"dumb" in British English

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dumbadjective

uk   /dʌm/  us   /dʌm/
  • dumb adjective (SILENT)

C1 permanently or temporarily unable to speak: He's been deaf and dumb since birth. She was struck dumb by what she had seen.
dumbness
noun [U] uk   /ˈdʌm.nəs/  us   /ˈdʌm.nəs/
(Definition of dumb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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