Phrases Expressions of Certainty and Uncertainty

I'm not so sure.

B2

Meaning

I'm uncertain or hesitant.

Examples

  • John: This plan seems perfect.
  • Alice: <b>I'm not so sure</b>. Have you considered the risks?
  • John: Hmm, you make a valid point.
  • Alice: Exactly, <b>I'm not so sure</b> it's flawless.
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