0 perfect, with no problems or bad parts:
impeccable taste/manners/credentials
His English is impeccable.
Even in her own lands, the matriarch's rank had to be absolutely impeccable to allow her to speak.
With no accompanying instruments, the choir was thrust centre-stage and relished every opportunity afforded them to show off their impeccable intonation and ensemble.
However attractive this hypothesis, it remains a presumption because of lack of impeccable empirical support.
The author has an impeccable background in ethnography.
A work of impeccable scholarship, it is a gathering and organizing of information, its themes and emphases solidly grounded in publishing history.
I admire him for his strong sense of responsibility and impeccable professionalism.
The author's comments are always well considered and his judgements impeccable.
Although written with the general reader in mind, it exhibits impeccable scholarship that has much to engage the more committed reader.
