contrapositive
contrapositively
flip side
flipside
inversively
additive inverse
inversely
inversive
conversion
reciprocally
apodict
conjunctive
counterintuitiveness
contrariness
weaker
dialectical
nonimplication
petitionarily
opposite
stronger
antonymous
hypothesis
inverse proportion
through the wrong end of the telescope
aparithmesis
antithesis
adjointly
to
term
equability
reversion
unitary
oppositeness
section
retrograde
predicate
hint
adjuncthood
counterdirectional
sublative
conditionality
reasoning
alternativeness
would
counterconclusion
circumstant
homunculus argument
reciprocal
sequaciousness
subextensive