souredness en · NOUN
Etymology
From soured + -ness.
Meanings
-
(uncountable) The quality of having become sour.
In his Satires we find what we may call a mellowed souredness of spirit, like the taste of the plum or sloe when touched by the first frosts.
1861, Thomas Wyatt, The Poetical Works of Sir Thomas Wyatt, page xvi: