Ununiform

Ununiform, as a descriptive adjective, refers to something that lacks uniformity or consistency. It implies a state of being diverse, varied, or non-standardized. An object, process, or collection described as ununiform exhibits differences in characteristics, qualities, or appearance across its constituent parts or throughout its duration. The term often suggests a departure from an expected or desired level of homogeneity. It is the direct antonym of "uniform".