With all due respect...

Meaning

Used to politely express disagreement or criticism.

Examples

• John: I think your proposal is fundamentally flawed.
• Alice: <b>With all due respect</b>, John, I've spent months working on this.
• John: I understand, but the market research doesn't support your projections.
• Alice: <b>With all due respect</b>, I believe your interpretation of the data is incomplete.