contrast
unlike
opposite
counter
odd bod
difference
contrariant
distinctiveness
alternative
mismatch
variant
nonstandard
change
foil
token
swindle
coordinate
turd in the punchbowl
complementer
nonexample
antipodes
edition
internality
reverse
version
representation
variation
actuator
misappearance
kissing cousin
different breed of cat
contrapose
tiger of a different stripe
illusion
excuse
second best
antipode
imperfection
turn-off
asexual
weak point
noncomestible
first-of-its-kind
overshape
dislike
unnature
contradictory
homomorph
samey
inclemency
nonexternality
unique
quasiequivalent
extraneity
sequel
subsequence
quiddity
haecceity
unfavorite
pop
little black dress
fly in the ointment
differing
erratic
two sides of the same coin
nonnegotiable
isolant
inhomogeneity
real thing
stick out a mile
obtuseness
traverse
absolute
whatever
negatum
unconventional
seity
compatible
externality
appendant
insipidity
transverse
cousin
pseudoneutral
parallel
match
analogue
not a pretty sight
analog
wind egg
inseparable
discern
partitive
wooden nickel
craporama
parameter
rinky-dink
type shit