virulency
acerbity
acid
acidity
acidulousness
acridity
acrimony
acuteness
amperage
animality
animosity
animus
antagonism
armipotence
asperity
astringency
atrocity
authority
bad blood
balefulness
banefulness
barbarity
beef
bile
bite
bitter feeling
bitter resentment
bitterness
bitterness of spirit
black power
bloodlust
brutality
brute force
causticity
charge
charisma
choler
clout
cogence
cogency
communicability
compulsion
contagiousness
deadliness
destructiveness
detrimentalness
dint
drive
duress
edge
effect
harmfulness
hostility
ill will
injuriousness
antipathy
boldness
detestation
ferocity
fierceness
harshness
malevolence
malignity
obstinacy
persistency
prevalence
rancour
ravage
rigour
scurrility
vehemence
venality
vindictiveness
vividness