Wiktionary
reciprocative
a. (context archaic English) reciprocated; giving back to one another.
WordNet
reciprocative
adj. given or done or owed to each other
Usage examples of "reciprocative".
It divided the figure from top to bottom, and its outer edges, ragged and lush, described the reciprocative forms of profiles, etched in white from the halves of what he'd intended to be a single face.