1 the quality of being unfriendly or unpleasant:
Some sourness and bitterness are desirable, to keep the coffee from tasting bland.
Add lime juice to the desired sourness and fish sauce to attain the proper saltiness.
This is what gives the characteristic sourness to sourdough breads.
I was surprised at the sourness and bad temper of some of the reviews.
That in itself is a cause for sourness: even local government representatives have little left to them beyond emptying bins.
There is a sourness in our national effort, because of the lack of will being displayed in our production.