on opposite sides of the barricades
debate
counterviewpoint
counterview
crosscurrent
dissenting
differ
at the same time
another story
antipolar
antinecessitarian
cynic
protest
power level
heretical
sniffingly
extremist
withspeak
counteridea
diametral
opposing
antiextreme
counterextremism
biasedly
antipragmatism
antiextremism
counterpoint
ambivalently
disagreer
misprejudiced
pray tell
antiskeptic
negative Nancy
preconception
anti-choicer
disagreeably
denialist
one-sidedly
antisupremacist
speak for oneself
antithetic
antipodean
counterpremise
counter
cross someone's path
opposingly
argumentum ad invidiam
witherward
negaholism
opposedly