I don't know neither vs I don't know either.

The correct phrase is "I don't know either." The use of "neither" in this context is incorrect. "Either" is the correct term to use when expressing a negative response to a question or statement.

Last updated: March 30, 2024

I don't know neither

This phrase is incorrect in English. The use of "neither" in this context is not appropriate.

The correct phrase should be "I don't know either." Use "either" to indicate a negative response to a question or statement.

I don't know either.

This phrase is correct in English. "Either" is the appropriate term to use when expressing a negative response.

Use this phrase when you want to indicate that you do not have knowledge or information about something that has been asked or stated.

Show examples from the web [+]

That, I don't know either.
Well, the answer is, I don't know either.
No, I don't know either.
Sure. I don't know either.
I don't know either.
I don't know either.
I don't know either.
I don't know either.
[both chuckling] I don't know either.
I don't know either. I don't -
I don't know either.
I don't know either sometimes.
Sometimes I don't know, either.
I don't know, either.
I don't know, either.
And I don't know why either.
I don't know that either.
I don't know her either.
I don't know you either.
And I don't know them either.

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I don't know neither vs I don't know either.