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"i don't know" vs "i didn't know"

Both phrases are correct, but they are used in different contexts. 'I don't know' is used when someone is currently unaware of something, while 'I didn't know' is used when referring to a past lack of knowledge.

Last Updated: March 27, 2024

i don't know

This phrase is correct and commonly used when someone is currently unaware of something.

This phrase is used to express a lack of knowledge about something in the present moment.

Examples:

  • I don't know the answer to that question.
  • I don't know where my keys are.

Alternatives:

  • I have no idea
  • I'm not sure
  • I'm clueless

i didn't know

This phrase is correct and commonly used when referring to a past lack of knowledge.

This phrase is used to express that you were unaware of something in the past.

Examples:

  • I didn't know you were coming over.
  • I didn't know the store closed early yesterday.

Alternatives:

  • I wasn't aware
  • I had no idea
  • I was uninformed

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