The waterboard argued that the quality of the water was good [ …]
The ‘better sort’ might communicate on a separate day; and in some parishes even the quality of the communion wine varied with the social quality of the recipients.
I'm not satisfied with the quality of the food here.
Used in the Beginning of Sentence
The quality of her essay has exceeded my expectations.
The quality of decision is like the well-timed swoop of a falcon which enables it to strike and destroy its victim. – Sun Tzu
Meaning of the quality for the defined word.
Grammatically, this idiom "the quality" is a noun, more specifically, a singularia tantum.