not up to par
- subparBelow acceptable quality
- lackingBeing without something
- inadequateNot sufficient for purpose
- mediocreOf only moderate quality
- substandardBelow required quality
falling short · disappointing · deficient · underwhelming · second-rate · shoddy · inferior · below average · wanting · unacceptable · flawed · bogey · weak · shabby · half-baked · slipshod · rough · unpolished
quality/performance standard
not up to parup to par
Meeting expected standards
up to standard · up to snuff · up to scratch · acceptable · satisfactory
excellence level
not up to parexcellent
Of superior quality
outstanding · exceptional · superb · first-rate · top-notch