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I'm not sure of anything vs I'm sure of nothing

I'm not sure of anything vs I'm sure of nothing which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

I'm not sure of anything is the most popular phrase on the web.

I'm sure of nothing

1153,000 results on the web

I'm not sure of anything

1512,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:
  • I'm sure nothing bad happened.
  • I'm posting men outside, make sure nothing comes or goes.
  • I'm sure nothing inappropriate happened.
  • After what that witch said, I can be sure of nothing but my doubts.
  • I'm sure she thinks of nothing else in the world.
  • I'm sure of nothing today.
  • I am sure of nothing except they think differently.
  • I'm sure of nothing today.
  • I'm not sure of anything.
  • I'm not sure of anything, Sylvette.
  • I'm not sure of anything.
  • No. I'm not sure of anything.
  • I'm not sure of anything yet.
  • No, I'm not sure of anything, okay?
  • I'm not sure of anything right now, Connor.
  • I'm not sure of anything, including myself.

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I'm not sure of anything vs I'm sure of nothing | GrammarChecker.io