backscratch
interplay
reciprocalize
back
interaction
reciprocatively
reciprocalization
reciprocity
ride bitch
gain-
reciprocantive
retroaction
accession
counteractivity
in kind
counterplay
retaliatory
related
reciprocalness
resistance unit
react
counter
constrain
serve someone the same sauce
opposite
enforce
impose
counterobligation
reciprocality
while one is at it
colligatively
mergism
retaliationist
reversive
reciprocalizer
deal with
counteractively
coenact
homolaterally
actuate
prompt
alternate
play along
complementization
propel
move
reciprocable
in exchange
motivate
incite