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Meaning: do not know

For example:

  • I asked Billy where his brother was, and he just said, "I dunno."

  • When we asked people where Brunei was, most of them shrugged and laughed and said, "Dunno."

Origin: First appeared in the 19th century as a contraction of "(I) do not know". It represented the informal pronunciation of the words.

Quick Quiz:

Nora said, "I dunno" when I asked her what
  1. her name was
  2. her tax ID number was
  3. her phone number was

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