The word "unvariednesses" refers to the quality or state of being unchanging, monotonous, or uniform. Its antonyms are diverse, varied, multifarious, versatile, and heterogeneous. These words denote variety or differences in quality, character, or form. Diverse implies marked difference in kind or form. Varied suggests the occurrence of a number of different types or forms. Multifarious refers to a great diversity or variety of parts or elements. Versatile implies the ability to assume many forms or varied functions. Heterogeneous suggests dissimilarity or diversity in composition, nature, or character. Using these antonyms, we can describe a situation or object as diverse, multifaceted, and versatile, rather than monotonous and uniform.