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dull

Dull means someone who is stupid or boring or something that is not shiny or something that is not sharp. (adjective)

  1. An example of dull is a book that is so boring you can't get past page ten.
  2. An example of dull is a rusted piece of metal that has not been polished and that no longer has any shine.
  3. An example of dull is a knife that no longer cuts well because it is no longer very sharp.

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See dull in Webster's New World College Dictionary

See dull in American Heritage Dictionary 4

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