adverb
- in a way that is not satisfactory or allowable
Examples
- The noise level in the library was unacceptably high.
- His behavior at the meeting was unacceptably rude.
- The product quality has declined unacceptably over the past year.
- She arrived unacceptably late for the important presentation.
- The restaurant’s service was unacceptably slow during dinner rush.
- The error rate in the report was unacceptably high for publication.