I have a slight reservation about...

Meaning

Expressing a mild objection or doubt.

Examples

• John: Let's go with the first design option.
• Alice: <b>I have a slight reservation about</b> its compatibility with older systems.
• John: I see your point. Can we find a way to address that?
• Alice: Let's look into alternative solutions. I still <b>have a slight reservation about</b> launching it without comprehensive testing.