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I don't know

idiom

Definition of I don't know

1 —used to say that one does not have the information someone is asking for
  • "What time does the library close?" "I don't know."
2 informal —used to express disagreement, doubt, or uncertainty
  • "I don't like that guy." "Oh, I don't know, he's not really so bad."
  • She thinks we should go now, but I don't know. Maybe we should wait.

Word by Word Definitions

i play

  1. : the 9th letter of the English alphabet

  2. : a graphic representation of this letter

  3. : a speech counterpart of orthographic i

  1. imaginary unit

  1. : the one who is speaking or writing — compare me, mine, my, we

  1. : someone aware of possessing a personal individuality : self

  1. iodine

  1. used as a connective vowel to join word elements especially of Latin origin

See the full definition of i
don't play

  1. : do not

  2. : does not

  1. : a command or entreaty not to do something

See the full definition of don't
know play

  1. : to perceive directly : have direct cognition of

  2. : to have understanding of

  3. : to recognize the nature of : discern

  1. : knowledge

See the full definition of know

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