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Webster 1913 Edition

Noun.

The quality or state of being wan; a sallow, dead, pale color; paleness; pallor;

as, the

wanness

of the cheeks after a fever

Noun.

Paleness; a sallow, dead, pale color; as the wanness of the cheeks after a fever.

wanness ‎(usually uncountable, plural wannesses)

The state of being wan; pallor.
- 1919, Stephen Graham, A Private in the Guards (page 139)
  […] the faint contours of grey clouds and the wannesses and darknesses of a rainy heaven, reflecting also on the faces of the men. All of us look a little strained, a little tired.