adversative
adverse
adversive
ally
alter ego
analogon
analogue
antagonistic
anteriority
anti
antipathetic
antipodal
antipode
antipodes
antipole
antithesis
antithetic
antonym
antonymous
associate
at cross-purposes
balancing
bold front
brave face
brave front
brother
clashing
close copy
close match
cognate
companion
compensating
complement
conflicting
confronting
congenator
congener
contra
contradictory
contradistinct
contrapositive
contrarious
contrary
contrasted
converse
coordinate
correlate
correlative
correspondent
counter
alternative
choice
option
affirm
caboose
chestful
common-size
consign
emi
error
gestatoria
hurl
lipgloss
offscouring
one-sentence
revealer
serif
tumbrel
whatsoever
Perse
averse
biodiverse
burse
coerce
curse
disburse
disperse
diverse
emerse
hearse
immerse
intersperse
inverse
merce
nurse
pearse
perce
pers
perse
perverse
purse
rehearse
reimburse
reverse
submerse
terse
transverse
traverse
vers
verse
worse