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

If someone else doesn't know something, and you also don't know it, then you might say, "I don't know either."

Explained by Betsy
Editor at TextRanch

Last updated: March 20, 2019 • 384235 views

This phrase is correct.

"I don't know either"

A friend doesn't know the answer to a question. You also don't know the answer.

When the friend asks you if you know the answer, you might reply, "I don't know either."

"Either" is optional in this sentence. "I don't know" would convey the same meaning.

Some examples from our editors:

A: I don't know that man's name. Do you know it?
B: I don't know either.
A: I don't know if this sentence is correct. Do you?
B: I don't know either. We should have the TextRanch editors check it.

Show examples from the web [+]

But... I don't know either one of you.
Well, like I say, I don't know either of them.
I don't know either sometimes.
I don't know either, okay?
I don't know either, Mr Rifat.
That, I don't know either.
I don't know either Claus or Claudio.
Well, the answer is, I don't know either.
I don't know either, which is why I need more time.
The thing is, I don't know either of you.
Sure. I don't know either.
You alright?/ I don't know./ I don't know either.
I don't know either, but rule #2: Don't ever lend Sammy money.
I don't know either of those men.
- No, I don't know either.
I don't know either, but rule #2:
-I don't know either. I don't -

Some alternatives from our editors:

I don't know.

This phrase is not correct. Don't use it.

"I don't know neither "

In English, double negatives are avoided. "Don't" and "neither" both have negative connotations.

To avoid this problem, change "neither" to "either."

Show examples from the web [+]

Dec 28, 2015 ... Is it correct to write it like this: I don't know either Alex or(or it's "nor"?) Marla. Or like this: I don't know neither Alex nor Marla. And another thing:.
Dec 17, 2015 ... The $1.9 billion may be the actual enterprise value, I don't know. Neither the Nets nor the NBA would tell me. My guess is we will find out via a ...
Dec 1, 2015 ... What is thanksgiving in a home with people I don't know? Neither did I have my Monica, Ross or Phoebe equivalents… I only had Elie. Elie is a ...
I don't know. Neither do you. In any case, let's just appreciate how great her answer was. 167 · April 15, 2014 at 11:40am. Remove. Vinay Thapliyal. Remove.

Some alternatives from our editors:

I don't know either.

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

"I don't know either"

"I don't know neither "

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