nonuniformity

Antonyms:

uniformity, uniformness

the quality of lacking diversity or variation (even to the point of boredom)

Types:

heterogeneity, heterogeneousness

the quality of being diverse and not comparable in kind

inconsistency

the quality of being inconsistent and lacking a harmonious uniformity among things or parts

diverseness, diversity, multifariousness, variety

noticeable heterogeneity

Type of:

dissimilarity, unsimilarity

the quality of being dissimilar