ˈēvən(n)ə̇s noun
( -es )
Etymology: Middle English evennesse, from Old English efennes, from efen even + -nes -ness
: the quality or condition of being even: as
a. archaic : fairness , impartiality
b. : balanced condition
ensure the evenness of the scales of justice
c. : freedom from variation or fluctuation : uniformity , consistency , regularity
her tone regained … its evenness of texture from the bottom register to the top — Current Biography
pronounced each syllable with great evenness
d. : placidity , equanimity
kindness and evenness of temper were two of his salient characteristics
e. : absence of expression especially in speech : flatness
although deeply moved, he spoke with a strange evenness