Faustianism
acerbity
acidity
acidulousness
acridity
acridness
acrimony
anger
animosity
animus
asperity
astringence
astringency
atonalism
atonality
bad blood
bad humor
bad temper
bile
biliousness
bitingness
bitter feeling
bitter pill
bitterness
cacophony
causticity
choler
clinker
cold comfort
corrosiveness
cuttingness
disappointment
discontent
discontentedness
discontentment
discord
discordance
discordancy
disgruntlement
disharmony
dissatisfaction
dissatisfiedness
dissonance
dissonancy
dissonant chord
divine discontent
edge
envy
feud
flatness
ill nature
after-effect
alkalinity
family
glower
grimness
ironist
malevolence
offensiveness
possessiveness
rancor
roguishness
saltness
side-pee
sternness
sullenness
sun-glare
table-spoonsful
tartness
triesto
uncharitableness
vigilantism
wistfulness