1. trait, character, feature. Quality, attribute, property agree in meaning a particular characteristic (of a person or thing). A quality is a characteristic, innate or acquired, that, in some particular, determines the nature and behavior of a person or thing: naturalness as a quality; the quality of meat. An attribute was originally a quality attributed, usually to a person or something personified; more recently it has meant a fundamental or innate characteristic: an attribute of God; attributes of a logical mind. Property applies only to things; it means a characteristic belonging specifically in the constitution of, or found (invariably) in, the behavior of a thing: physical properties of uranium or of limestone. 3. nature, kind, grade, sort, condition.