The quality of being level, flat, or smooth; consistency or uniformity in something.
From 'even' (smooth, level, consistent) + '-ness' (suffix forming abstract nouns). 'Even' derives from Old English 'efen,' meaning flat or level, with the abstract noun form created in Middle English.
The evenness of a playing field is crucial in sports—even a slight slope can give one team an advantage, which is why officials carefully check that athletic surfaces are perfectly level.
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