pleasantness,
sweetness the quality of giving pleasure; "he was charmed by the sweetness of her manner"; "the pleasantness of a cool breeze on a hot summer day"
abrasiveness the quality of being sharply disagreeable
acridness,
acridity the quality of being sharply disagreeable in language or tone
disagreeableness -
an ill-tempered and offensive disposition
temperament,
disposition an adjustment of the intervals (as in tuning a keyboard instrument) so that the scale can be used to play in different keys
acrimony,
jaundice,
thorniness,
acerbity,
tartness,
bitterness yellowing of the skin and the whites of the eyes caused by an accumulation of bile pigment (bilirubin) in the blood; can be a symptom of gallstones or liver infection or anemia