This is unacceptable.

Meaning

Expressing strong disapproval.

Examples

• John: The quality of this work is very poor.
• Alice: I agree. There are many errors.
• John: Precisely. <b>This is unacceptable</b>.
• Alice: I concur. We need to address this immediately. This level of inaccuracy is simply <b>this is unacceptable</b>.