acridness
acerbity
acidity
acidness
acidulousness
acrimony
acuity
acumination
acuteness
asperity
astringence
astringency
bite
bitingness
bitter pill
bitterness
causticity
causticness
corrosiveness
cuttingness
edge
fierceness
gall
gall and wormwood
grip
harshness
incisiveness
keenness
mordacity
mordancy
mucronation
piercingness
piquancy
poignancy
point
pointedness
prickliness
pungency
rigor
roughness
severity
sharpness
sourness
spinosity
stabbingness
sting
stridency
stringency
tartness
bitter
disagreeableness
odor
odour
olfactory perception
olfactory sensation
smell
earthiness
elastomers
hypercriticism
lubricator
pertinence
preventatives
querulousness