What does unevenness mean?
Unevenness is the noun for the condition of not being even or uniform. It most commonly describes an irregular surface, shape, or arrangement, as in the unevenness of a path or the unevenness of a wall. It can also refer figuratively to inequality or disparity, especially in discussions of resources, opportunities, treatment, or performance. Unlike the adjective uneven, which directly describes a thing, unevenness names the quality or condition itself. The term is precise but not especially formal and is useful whenever irregularity matters: a physical feature may obstruct movement, while social unevenness may indicate unequal access or outcomes. Although “unevenness” clearly derives from “uneven,” it is more explicit and noun-like, fitting naturally into phrases such as “an unevenness in distribution” and “the unevenness of the terrain.”
nounThe quality or condition of being uneven, especially an irregular surface or an unequal distribution.
- A lack of smoothness or regularity in a surface, shape, or physical arrangement.
- A disparity or lack of equality in the distribution, treatment, or performance of people or things.
"The unevenness of the terrain made the journey slower and more difficult."
"Small stones and roots created an unevenness in the path that walkers had to negotiate."
"The report highlighted the unevenness in educational opportunities between urban and rural districts."
The plural is grammatically possible but rarely needed because unevenness is usually used as an abstract singular noun.
"The slight unevennesses in the fabric became visible under the strong lighting."
The key to “unevenness” is in its first half: it is “evenness” with a negation.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unevenness come from?
Unevenness was formed in English by attaching the Middle English suffix -ness, which creates a noun naming a state or quality, to uneven. Uneven combines the prefix un-, meaning “not,” with even; even ultimately derives from Old English efen, meaning “equal” or “level.” Unevenness therefore belongs to the same English word family as evenness, uneven, and unevenly.
Related word forms
How unevenness is actually used
The word is neutral in register and common in descriptive, technical, and figurative contexts. Its physical sense usually concerns irregularity in a surface or arrangement, while its social and economic senses emphasize inequality or disparity.
Easily confused with unevenness
Uneven is an adjective that describes a thing, whereas unevenness is the noun naming the condition or quality of being uneven.