dilemma
on the horns of a dilemma
lesser of two evils
lesser evil
between the devil and the deep blue sea
tough call
oppugner
false dilemma
keep someone honest
overmatch
polylemma
corrival
triangulate
opponent
have it both ways
better
antioption
cross-handed
third-party
between the hammer and the anvil
champagne problem
counterargument
countereffort
back and fill
elimination
ambitendency
Claytons
reasoning by elimination
contrary
hermaphrodite
tomato can
either-or
split the difference
quadrilemma
takeout
alternative
anticompetitive
probe
mispromote
lucus a non lucendo
counterview
Parrondo's paradox
reverse
antipolar
swim upstream
withstander
crazymaking
damned if one does and damned if one doesn't
preemptive
anticompetitor
between a rock and a hard place
countertactic
field
countercounterargument
decoy effect
counterexplanation
trilemma
dick move
obverse
suck and blow
undermatch
coinhibit
alternativity
schizophrenia
rivalry
semipositive
mismatch
wrong-foot
sidegrade
dirty trick
tromboon
contraselectable
concurrent
asymmetrical
struggle
countertheorem
in competition
counterparry
opposably
default
punt
nonmatch
counterweigh
witherward
Antarctic
you can't be half pregnant
mixed reaction
react
in the lap of the gods
battle
conflict
opposing
hand-off