I'm not entirely convinced.

Meaning

I'm somewhat doubtful or hesitant.

Examples

• John: 'This approach will definitely work.'<br>
• Alice: '<b>I'm not entirely convinced</b>; there are potential risks we need to address.'
• John: '<b>I'm not entirely convinced</b>; let's consider other options before making a decision.'
• Alice: 'This is the best course of action.'<br>