antagonism
antipathy
antithesis
bearishness
bitchiness
cantankerousness
churlishness
clashing
collision
conflict
confrontation
contradiction
contradistinction
contraindication
contraposition
contrariety
contrariness
contrast
counterposition
crabbedness
crankiness
cross-purposes
crossness
crustiness
cussedness
difficultness
disagreeability
disagreement
discrepancy
dourness
excitability
fractiousness
frowardness
hostility
huffiness
huffishness
inconsistency
inimicalness
irascibility
irritability
meanness
oppositeness
opposition
opposure
oppugnance
oppugnancy
orneriness
perverseness
perversite
evil
evilness
baseness
blindness
caprice
carelessness
depravity
disobedience
folly
frivolity
indiscretion
infirmity
ingratitude
laziness
levity
obstinacy
perversion
rashness
recklessness
selfishness
stubbornness
stupidity
wickedness
wilfulness
biodiversity
diversity
university