A degree or grade of excellence or worth WordNet 3.0 & Open English WordNet

In business, engineering, and manufacturing, quality – or high quality – has a pragmatic interpretation as the non-inferiority or superiority of something ; it is also defined as being suitable for the intended purpose while satisfying customer expectations. Wikipedia

The non-inferiority or superiority of something Wikipedia Disambiguation

Non-inferiority or superiority of something; a perceptual, conditional, and somewhat subjective attribute that may be understood differently by different people Wikidata

Level of excellence. OmegaWiki