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