cualidad
/kwaliˈdad/ · B2 · noun · f
quality
cual (what kind) + -idad (-ity): what kind a thing is, its quality
From Latin qualitas, built on qualis, of what kind. English quality comes from the same root. Don't mix it up with calidad, which means quality as a grade (alta calidad). Cualidad is a trait, like a person's good qualities.