expression, noun which may take the genitive case particle 'no', noun
above average; upper middle
Used to describe a level, rank, or quality that is better than average but not top-tier. Often used in grading, evaluations, or self-assessment.
His grades are around above average.
This restaurant has received an above-average rating.
A set phrase combining 中 (middle) and 上 (upper) with the possessive particle の, literally 'upper of the middle'. The exact origin is uncertain, but it follows a common pattern for expressing relative rank.