ambi-
amphi-
equifacial
bilateral
bifronted
either
opisthographic
frontofrontal
bothridial
contrariwise
ambidirectional
cross-handed
twinstick
xor
differing
interden
speak
side
every stick has two ends
vagrate
dif
equidifferent
two-sided
reversely
on the flip side
shake over
pendant
biconcave
wherebetween
ana-
co-
inashi
coalternate
two sides of the same coin
mixed
uncommitted
bisemous
duopolistically
alongside
conversely
then
tweely
adhibit
leer
in between
mutually
half and half
however
dextrally
two-facedly
doubly
entangled
duodenally
corrivalry
stipulate
contradictorily
bidual
coupla
two of a kind
have a foot in both camps
coassume
opposite
mate
fellow
between
interresponse
dualist
dualistically
fritter
play a double game
couple
at once
corespective
if-by-whiskey
match
across
collaterally
bold
fiercen
pushmi-pullyu
bi-
corelation
both-sides
pick sides
submentalize
alteriority
cotargeting
egalite
egality
whipsaw
right
apart
comparate
twosome
equidifference
inter-