1. an essential and distinguishing attribute of something or someone 2. a degree or grade of excellence or worth 3. a characteristic property that defines the apparent individual nature of something 4. (music) the distinctive property of a complex sound (a voice or noise or musical sound) 5. high social status
Familiarity information: QUALITY used as a noun is common.
upper-class (occupying the highest socioeconomic position in a society)
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