quality
1. A distinctive element: attribute, character, characteristic, feature, mark, peculiarity, property, savor, trait.
2. A level of superiority that is usually high: caliber, merit, stature, value, virtue, worth.
3. High style in quality, manner, or dress: refinement. Informal: class.
4. Degree of excellence: caliber, class, grade.
5. People of the highest social level: